| idx
				 int64 0 1.68k | query
				 stringlengths 5 18 | tree_length
				 int64 6 14 | depth
				 int64 3 3 | minimized_regex
				 stringlengths 4 15 | minimized_tree_length
				 int64 5 12 | minimized_depth
				 int64 2 6 | equivalent_regex
				 stringlengths 5 19 | not_equivalent_regex
				 stringlengths 5 18 | positive_example
				 stringlengths 0 8 | negative_example
				 stringlengths 0 8 | 
|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 
	a?d*(b+d+d+d) | 13 | 3 | 
	a?d*(b+d) | 9 | 3 | 
	a?(d*(b+d)+d?b) | 
	(a+b)b?(d*+d?) | 
	dd | 
	ddab | 
| 1 | 
	(a*+a*)(a+c+ad) | 13 | 3 | 
	a*(c+ad?) | 9 | 4 | 
	ad?+a*(c+ad?) | 
	(a+d+c+d)d*d* | 
	aaaaad | 
	aaacd | 
| 2 | 
	b*bc+c?d* | 12 | 3 | 
	b*c+c?d* | 10 | 3 | 
	cd+b*c+c?d* | 
	(b+b+c)b*d? | 
	dddddddd | 
	ddddddcd | 
| 3 | 
	(a+c+d?)b*? | 10 | 3 | 
	(a+c+d)?b* | 9 | 4 | 
	(d+(a+c+d?b)b*)? | 
	(a+d)c?b?* | 
	abbbbbdb | |
| 4 | 
	dc*(a*+cc) | 11 | 3 | 
	dc*a* | 7 | 3 | 
	d(c*(c+aa*)+a*) | 
	(a?+d*)c?* | 
	dcc | 
	dcadaaaa | 
| 5 | 
	(c+c?)(b+d)d* | 11 | 3 | 
	c?(b+d)d* | 9 | 3 | 
	c?(b+d)d* | 
	b+c+cc+c*d* | 
	cd | 
	dbdd | 
| 6 | 
	(a?+a+a)(b+d+c*) | 13 | 3 | 
	a?(b+d+c*) | 9 | 3 | 
	(a+a?(b+d+cc*))? | 
	(a?+b+d)(c+c)* | 
	acccc | 
	ccccb | 
| 7 | 
	(a+d)c*b?* | 10 | 3 | 
	(a+d)c*b* | 9 | 3 | 
	(a+d)c*(cb?+b*) | 
	a+c+b+d+c*d* | 
	dccbbb | 
	dbccbbb | 
| 8 | 
	(a+d)d*(c+c+d*) | 13 | 3 | 
	(a+d)d*c? | 9 | 3 | 
	(a+d)d*c?+d?d | 
	(d+d*)(ad+c?) | 
	dddc | 
	adcdd | 
| 9 | 
	c*d?(d?+dd) | 12 | 3 | 
	c*d?(dd)? | 10 | 3 | 
	(c*(c+d(dd?)?))? | 
	(c+d)*(cd+d+d) | 
	cccd | 
	dcccddd | 
| 10 | 
	(b+c?)(a+a+d*) | 11 | 3 | 
	(b+c)?(a+d*) | 9 | 3 | 
	dd?+(b+c)?(a+d*) | 
	(a+c+b+d)b*b? | 
	cddddddd | 
	bddbdddd | 
| 11 | 
	a*c*+c*(c+d) | 12 | 3 | 
	a*c*+c*d | 10 | 3 | 
	a*c*+c*d | 
	d(a+a)+(c+d)* | 
	ccd | 
	acccccd | 
| 12 | 
	b?b?(c?+d*) | 11 | 3 | 
	b?b?(c+d*) | 10 | 3 | 
	bd+b?b?(c+d*) | 
	(b+d)(b+d)c** | 
	bdd | 
	dbc | 
| 13 | 
	a*d*(b?+d*) | 11 | 3 | 
	a*d*b? | 8 | 3 | 
	dd+a*d*b? | 
	(a+b)*(ad+b+d) | 
	aaab | 
	dddadb | 
| 14 | 
	a*(b+c)+c*+c+c | 13 | 3 | 
	a*(b+c)+c* | 9 | 3 | 
	(aa)*a?(b+c)+c* | 
	a*+a?+(a+c)b* | 
	aaaaab | 
	aaaaaabc | 
| 15 | 
	b*(c+c)(c?+cc) | 13 | 3 | 
	b*(cc?)?c | 10 | 5 | 
	(bb+b*(cc?)?)c | 
	(b*+b+c)c*c? | 
	bbbbbc | 
	bcbccc | 
| 16 | 
	(a*+a+a)(a+c+a+d) | 14 | 3 | 
	a*(a+c+d) | 8 | 3 | 
	a*(a+c+d)+a?c | 
	(c+a*)(a+a+d?) | 
	aaaad | 
	aadaaaac | 
| 17 | 
	b*b?(cd+d?) | 12 | 3 | 
	b*(c?d)? | 8 | 4 | 
	(bb+b*(b+c?d))? | 
	(b+d+c?)(d*+d*) | 
	bbbb | 
	bbdbbd | 
| 18 | 
	ad*(a+a)* | 9 | 3 | 
	ad*a* | 7 | 3 | 
	a(d(da+d*))?a* | 
	(a*+dd)(d*+d?) | 
	addaaaaa | 
	adaddaa | 
| 19 | 
	(a+c)d*b** | 10 | 3 | 
	(a+c)d*b* | 9 | 3 | 
	(a+c)((b+dd*)b*)? | 
	a*c*+a?+b+d | 
	addddbb | 
	cbcbbb | 
| 20 | 
	(aa+c?)(b*+b+b) | 13 | 3 | 
	(c+aa)?b* | 9 | 4 | 
	c+(aa+c?b)?b* | 
	(a?+b?)(b+b+c*) | 
	bbbbbb | 
	bbbbcbb | 
| 21 | 
	a*(b+d)+b*+b+b | 13 | 3 | 
	a*(b+d)+b* | 9 | 3 | 
	ab+a*(b+d)+b* | 
	a?*(a+d+bd) | 
	aaaab | 
	abd | 
| 22 | 
	(a+d)c*(b*+c*) | 12 | 3 | 
	(a+d)c*b* | 9 | 3 | 
	(a+d)(cc)*c?b* | 
	(a+d+b*)b*c? | 
	db | 
	baccccc | 
| 23 | 
	(bc+c+d)* | 8 | 3 | 
	(d+b?c)* | 7 | 4 | 
	(d+(b+cdb?)?c)* | 
	c+b*+(c+d)* | 
	ccbcdcdd | 
	ddcbbd | 
| 24 | 
	b??(b+d+c*) | 10 | 3 | 
	b?(b+d+c*) | 9 | 3 | 
	bc?+b?(b+d+c*) | 
	(b+c+c)(b+c)d* | 
	bccdccc | |
| 25 | 
	(c+c*)(a*+c+c) | 11 | 3 | 
	c*a* | 5 | 2 | 
	c*(c(ca)?a+a*) | 
	(a*+c*)c?* | 
	cccccaa | 
	aaacaa | 
| 26 | 
	b*+(a+c)b* | 9 | 3 | 
	(a+c)?b* | 7 | 3 | 
	(b+(a+c+bb)b*)? | 
	a+a+c+a*b* | 
	abb | 
	bbcbbbbb | 
| 27 | 
	a*c*+b+b+bc | 13 | 3 | 
	(b+a*c*)c? | 10 | 4 | 
	bc?+a*(ac+c*) | 
	(a+c)c*+(b+c)* | 
	acccc | 
	acacccc | 
| 28 | 
	(a+c)(b+d)c*c? | 13 | 3 | 
	(a+c)(b+d)c* | 10 | 3 | 
	(a+c)(b+d)c* | 
	(a+c+b*)(d*+d*) | 
	abcccccc | 
	abcccdcc | 
| 29 | 
	(a*+b*)(bc+c+c) | 13 | 3 | 
	(a*b?+b*)c | 10 | 4 | 
	(a*(b+ab?)+b*)c | 
	(a?+b?)(b*+c+c) | 
	aaaaabc | 
	abcb | 
| 30 | 
	(a*+c*)(a+a+a+c) | 13 | 3 | 
	(a*+c*)(a+c) | 9 | 3 | 
	aa*+(a*+c*)(a+c) | 
	a?c*(aa+a+c) | 
	cc | 
	cccaa | 
| 31 | 
	(ab+b+c)(c*+c*) | 13 | 3 | 
	(c+a?b)c* | 9 | 4 | 
	c+(cc+a?b)c* | 
	(c+a*)a*(b+c) | 
	abccc | 
	cacc | 
| 32 | 
	a*aa+(a+d)c* | 13 | 3 | 
	aa*+(a+d)c* | 11 | 3 | 
	aa*+(a+d)c* | 
	(a+c+a+c)(c+d)d* | 
	dccc | 
	adcccccc | 
| 33 | 
	(d+d*)(c?+cc) | 11 | 3 | 
	d*c?c? | 8 | 3 | 
	(d*(c+d))?c?+d* | 
	(c+c*)(cc+d*) | 
	ddddcc | 
	dcdddc | 
| 34 | 
	(a+a)*+b*c? | 10 | 3 | 
	b*c?+a* | 8 | 3 | 
	b?(b*c)?+a*+b* | 
	(a?+c?)(a+b)* | 
	aa | 
	baaaa | 
| 35 | 
	(a+b)(c+d)d?* | 11 | 3 | 
	(a+b)(c+d)d* | 10 | 3 | 
	(a+b)(c+c?d*d) | 
	(a*+b*)b*cd | 
	bcdddd | 
	acdddbd | 
| 36 | 
	(a+a)c?(a+d)* | 11 | 3 | 
	ac?(a+d)* | 9 | 3 | 
	a(c?(a+d)*+d*) | 
	a*a?(ac+d*) | 
	adddaddd | 
	ccaddad | 
| 37 | 
	(a+b+a+c)(c*+c*) | 13 | 3 | 
	(a+b+c)c* | 8 | 3 | 
	(a+b+c)c*+(b+c)c | 
	(a+b)c*+c*+c* | 
	cccccc | 
	aac | 
| 38 | 
	(a+a+d)(a+b)* | 10 | 3 | 
	(a+d)(a+b)* | 8 | 3 | 
	(a+d)(a+b)*+a*a | 
	(a+b)d*+d*+d? | 
	dbbaaab | 
	abbbbadb | 
| 39 | 
	(a+c)*(a+c+d*) | 11 | 3 | 
	(a+c)*d* | 7 | 3 | 
	a*((a+c)*d*+c*) | 
	(a+a)c*d?d? | 
	aacaadd | 
	caaacddc | 
| 40 | 
	b*+bc+(b+d)c* | 13 | 3 | 
	(b+d)c*+b* | 9 | 3 | 
	(b+d)(cc)*c?+b* | 
	(b+b)*(c+d+d*) | 
	dcccccc | 
	dcdcc | 
| 41 | 
	b?b?c** | 9 | 3 | 
	b?b?c* | 8 | 3 | 
	b(bc*)?+b?c* | 
	c*b*? | 
	ccccc | 
	cbc | 
| 42 | 
	(a+d+bd)d*d? | 13 | 3 | 
	(a+b?d)d* | 9 | 4 | 
	(a+(b+a?d)?d)d* | 
	aad*(b*+dd) | 
	d | 
	dddddad | 
| 43 | 
	b*c*+bd+c? | 12 | 3 | 
	bd+b*c* | 9 | 3 | 
	b(d+b*b)+b*c* | 
	b?+d+d+(c+d)* | 
	bb | 
	bbcccccd | 
| 44 | 
	(ad+b?)(c*+c?) | 12 | 3 | 
	(b+ad)?c* | 9 | 4 | 
	((b+ad+b?c)c*)? | 
	(a+b+b*)(c?+d+d) | 
	bcccccc | 
	aacccc | 
| 45 | 
	(a+c+a+c)b*c? | 13 | 3 | 
	(a+c)b*c? | 9 | 3 | 
	(a+c)(b*(c+bc?))? | 
	(c+a*)(a?+b+b) | 
	abbbbbb | 
	aabbbbc | 
| 46 | 
	(b*+d?)(b*+d?) | 11 | 3 | 
	(d+b*)(d+b*) | 9 | 3 | 
	(d+b*)(d+b*)+(bb)* | 
	(b*+b+b)(b+d)(b+d) | 
	bbbbd | 
	ddbbbbb | 
| 47 | 
	a**+(b+c)* | 8 | 3 | 
	a*+(b+c)* | 7 | 3 | 
	b*(c(bc?)*)*+a* | 
	a*c?(b+b)c* | 
	ccccbbc | 
	baccbbcc | 
| 48 | 
	b*b*(c+d)d* | 12 | 3 | 
	b*(c+d)d* | 9 | 3 | 
	bd+b*(c+d)d* | 
	b+d*+b?c* | 
	bbbcd | 
	bdbdddd | 
| 49 | 
	(b*+c*)(c+c)? | 10 | 3 | 
	b*c?+c* | 8 | 3 | 
	bb+b*(bc)?+c* | 
	(b*+bc)c?* | 
	ccccbc | |
| 50 | 
	d(a+a)+(c+d)* | 10 | 3 | 
	da+(c+d)* | 8 | 3 | 
	d(a+d+cc)+(c+d)* | 
	d+a*+c*d? | 
	cddcccdc | 
	cdddaccd | 
| 51 | 
	(c+c*)(a?+c+d) | 11 | 3 | 
	c*(a+d)? | 7 | 3 | 
	(a+c*(d+c(a+d)?))? | 
	a*(a+a)(c*+d*) | 
	ccd | 
	cccac | 
| 52 | 
	(a+c)*+ad+d? | 11 | 3 | 
	a?(d+(a+c)*) | 9 | 4 | 
	d+a(a+d)?+(a+c)* | 
	(a+d+c*)c?* | 
	acccca | 
	acaadccc | 
| 53 | 
	(b*+d*)(bc+c+c) | 13 | 3 | 
	(d*b?+b*)c | 10 | 4 | 
	((d+b*)b+d*b?)c | 
	(c+d+d)(b*+d*) | 
	bbc | 
	bbdbbbc | 
| 54 | 
	(a+c+c?)c?d* | 12 | 3 | 
	((a+c)c?)?d* | 10 | 4 | 
	(a+(a+c)?(c+d))?d* | 
	(a?+c+c)(c+d+d*) | 
	add | 
	daddd | 
| 55 | 
	(b*+dd)c*? | 10 | 3 | 
	(dd+b*)c* | 9 | 3 | 
	((c+bb*+dd)c*)? | 
	(b*+c?)(cd)* | 
	b | 
	dbbbbbbb | 
| 56 | 
	b*b*+c*(c+d) | 12 | 3 | 
	c*d?+b* | 8 | 3 | 
	c+c*(d+cc)+b* | 
	cd*+b*d* | 
	b | 
	bbdbbbb | 
| 57 | 
	(a+c)*(c*+d+d) | 11 | 3 | 
	(a+c)*d? | 7 | 3 | 
	c*(a+d)+(a+c)*d? | 
	c*(a+a+c+d) | 
	caaaccaa | 
	dcaacca | 
| 58 | 
	(a+b+bb)b*d* | 13 | 3 | 
	(a+b)b*d* | 9 | 3 | 
	(a+(ab)?b)b*d* | 
	a*?(bb+d?) | 
	bbbdddd | 
	abdb | 
| 59 | 
	(a?+d+d)b*c? | 12 | 3 | 
	(a+d)?b*c? | 10 | 4 | 
	(a+d)?b*c?+b* | 
	a**(b+c)(c+d) | 
	abbbbbbb | 
	dbbbbca | 
| 60 | 
	(b+b+d)a*d* | 11 | 3 | 
	(b+d)a*d* | 9 | 3 | 
	(b+d)(a*(a+d)d*)? | 
	a+d+b*+(b+d)* | 
	dadd | 
	adaaaadd | 
| 61 | 
	(a+d)(b+b)+(b+c)* | 12 | 3 | 
	(a+d)b+(b+c)* | 10 | 3 | 
	(a+d)?b+(b+c)* | 
	a*b?(c+c+cd) | 
	cbcccbcb | 
	bdbbbbcc | 
| 62 | 
	c*(c+d)+c+d+d* | 13 | 3 | 
	c*d?+d* | 8 | 3 | 
	(d+cc*)d?+d* | 
	(d+d*)c*(c+d) | 
	ccccccd | 
	cdccc | 
| 63 | 
	(c+d?)(b+b)* | 9 | 3 | 
	(c+d)?b* | 7 | 3 | 
	(c+d)?b* | 
	b*c*+bd+c? | 
	dbbb | 
	dbcbbbb | 
| 64 | 
	(b+c*)(a+a)d* | 11 | 3 | 
	(b+c*)ad* | 9 | 4 | 
	(b+(cc)*c?)ad* | 
	(a*+aa)(b+d+c?) | 
	ccccad | 
	adddddda | 
| 65 | 
	(c+c)d*(c+d)* | 11 | 3 | 
	c(c+d)* | 6 | 3 | 
	(cdd*)?c(c+d)* | 
	(c+c+c+c)(c+d)* | 
	cddcccdc | 
	dcccdcdd | 
| 66 | 
	a*+aa+b*(b+c) | 13 | 3 | 
	b*c?+a* | 8 | 3 | 
	bb+b*(b+c)+a* | 
	a*(a+a)(b*+c+c) | 
	aaaaa | 
	bbbca | 
| 67 | 
	a*c?(b?+c?) | 11 | 3 | 
	a*(c?(b+c))? | 10 | 4 | 
	a*((a+c)c+c?b?) | 
	a*(c+c)(a?+b?) | 
	aaaaaaa | 
	aaacca | 
| 68 | 
	ba*c?* | 8 | 3 | 
	ba*c* | 7 | 3 | 
	ba?(cc+a*c*) | 
	(a+c)*+(b+b)cc | 
	bac | 
	bacccbc | 
| 69 | 
	b+ac+b*c* | 11 | 3 | 
	ac+b*c* | 9 | 3 | 
	(a+cc?)c+b*c* | 
	a*(c+c)b*c* | 
	bbbbbbcc | 
	bbbbab | 
| 70 | 
	a*c*+c*+c+c | 12 | 3 | 
	a*c* | 5 | 2 | 
	a*((c+aa)c?+c*) | 
	a**c*cc | 
	cc | 
	aacaaccc | 
| 71 | 
	a*?(b?+b+c) | 10 | 3 | 
	a*(b+c)? | 7 | 3 | 
	(aa)*a?(b+c+a*) | 
	a?*(bc)* | 
	a | 
	aaaaacab | 
| 72 | 
	(a+a)cc+(c+d)* | 12 | 3 | 
	acc+(c+d)* | 10 | 3 | 
	(a+cd)cc+(c+d)* | 
	(a?+a+d)(c+c)* | 
	dcccdcdd | 
	accdcc | 
| 73 | 
	a?*(a+b)(a+c) | 11 | 3 | 
	a*(a+b)(a+c) | 10 | 3 | 
	ac+a*(a+b)(a+c) | 
	(a+c+b*)(c*+c+c) | 
	ac | 
	aaaaabb | 
| 74 | 
	b**(bd+c*) | 10 | 3 | 
	b*(bd+c*) | 9 | 3 | 
	b*(b(d+cc)+c*) | 
	b*+b+b+b*(c+d) | 
	cccccc | 
	bdbbbbcc | 
| 75 | 
	a*a*(a+c+a+d) | 13 | 3 | 
	a*(a+c+d) | 8 | 3 | 
	c+a*(d+a(c+d)?) | 
	a*c*+ac+dd | 
	aa | 
	aaacd | 
| 76 | 
	a?b*(a?+b+b) | 12 | 3 | 
	a?b*a? | 8 | 3 | 
	((a+b)b+a?b*)a? | 
	(a?+b*)(aa)* | 
	bb | 
	abbabba | 
| 77 | 
	(b+a*)(d*+d?) | 10 | 3 | 
	(b+a*)d* | 7 | 3 | 
	a*(ad*)?+b?d* | 
	(a+b)*b*d? | 
	aaaddd | 
	ddadddd | 
| 78 | 
	(a*+b?)(b?+c?) | 11 | 3 | 
	(b+a*)(b+c)? | 9 | 3 | 
	ab?+(b+a*)(b+c)? | 
	a?+b+c+(a+c)* | 
	aaa | 
	acc | 
| 79 | 
	(b+a*)c** | 8 | 3 | 
	(b+a*)c* | 7 | 3 | 
	(b+a*)c*+c?c? | 
	(a+a+b?)(a+c)c* | 
	aaaaaaa | 
	cccacccc | 
| 80 | 
	(b+c)c?d*d? | 12 | 3 | 
	(b+c)c?d* | 9 | 3 | 
	(b+c)c?d*+c?c | 
	(b*+bb)(c+d)? | 
	cddddd | 
	bcdddb | 
| 81 | 
	a?c*(bd+d+d) | 13 | 3 | 
	a?c*b?d | 10 | 4 | 
	(a+c)?(c*(b+c))?d | 
	(a+c+a+c)b*d* | 
	accd | 
	accad | 
| 82 | 
	(a*+b?)(a+a+c?) | 12 | 3 | 
	(b+a*)(a+c)? | 9 | 3 | 
	a*c?+b?(a+c)? | 
	(a+b)c*(b*+c+c) | 
	aac | 
	aaaabaaa | 
| 83 | 
	(a+d)b?d** | 10 | 3 | 
	(a+d)b?d* | 9 | 3 | 
	(a+d)(b+(b?d)?d*) | 
	(a+d*)(b*+b*) | 
	d | 
	ada | 
| 84 | 
	(a?+ac)(b+d)* | 11 | 3 | 
	(ac?)?(b+d)* | 10 | 4 | 
	db+(ac?)?(b+d)* | 
	(b+c*)(a+a)d* | 
	acbbd | 
	ddddabb | 
| 85 | 
	(c+a+b)c*c? | 11 | 3 | 
	(a+b+c)c* | 8 | 3 | 
	c+(a+b+cc)c* | 
	(aa+b*)(c*+cc) | 
	b | 
	cac | 
| 86 | 
	(a+c+d?)c?* | 10 | 3 | 
	(a+d)?c* | 7 | 3 | 
	(a+d)?c* | 
	a*d*+aac? | 
	cccd | |
| 87 | 
	a*ab+b*d* | 12 | 3 | 
	a*b+b*d* | 10 | 3 | 
	(b+aa*)b+b*d* | 
	a*(a+b)+b?d* | 
	bbbbbbbb | 
	aaaaad | 
| 88 | 
	a*d*(b*+c?) | 11 | 3 | 
	a*d*(c+b*) | 10 | 3 | 
	(dd+a*d*)(c+b*) | 
	(c+c*)(a+b)d? | 
	aaaaaa | 
	cdddb | 
| 89 | 
	(a+b+dd)d** | 11 | 3 | 
	(a+b+dd)d* | 10 | 3 | 
	dd+(a+b+dd)d* | 
	a*(b+b)(a?+d*) | 
	adddddd | 
	bdbddd | 
| 90 | 
	(a+d+d?)b*d? | 12 | 3 | 
	(a+d)?b*d? | 10 | 4 | 
	(a+d)?(bd+b*d?) | 
	dd*(a*+b+b) | 
	bbbbbd | 
	abbbabd | 
| 91 | 
	db*d** | 8 | 3 | 
	db*d* | 7 | 3 | 
	d(d(dd)?+b*d*) | 
	d+b+d+b*d* | 
	dbbbbb | 
	dbbdbbbb | 
| 92 | 
	b*d*(b?+dd) | 12 | 3 | 
	b*d*b? | 8 | 3 | 
	(bb)*b?d*b? | 
	db*(d*+d+d) | 
	ddd | 
	ddbd | 
| 93 | 
	(a+c+b+d)c** | 11 | 3 | 
	(a+b+c+d)c* | 10 | 4 | 
	cc+(a+b+c+d)c* | 
	(a+b+ad)(c*+c+c) | 
	acc | 
	ccccac | 
| 94 | 
	a*d*+b*(d+d) | 12 | 3 | 
	a*d*+b*d | 10 | 3 | 
	(d+b*)d+a*d* | 
	a?b*+bb+d* | 
	aaddd | 
	aaaaaadb | 
| 95 | 
	b?b?(c*+c*) | 11 | 3 | 
	b?b?c* | 8 | 3 | 
	((c+b?b)c*)?c? | 
	b*(c+c)c*? | 
	bcccccc | 
	bbccbcc | 
| 96 | 
	(a*+aa)(bd)* | 11 | 3 | 
	a*(bd)* | 7 | 3 | 
	a*((bd)*bd)? | 
	(a?+d?)b** | 
	aaaabd | 
	aaaabaa | 
| 97 | 
	(c+b*)c*? | 8 | 3 | 
	b*c* | 5 | 2 | 
	(b(c+bb?)+b*)c* | 
	b?*+(b+c)c* | 
	bcccc | 
	bcbcccc | 
| 98 | 
	(a+c)d*(b+d+dd) | 14 | 3 | 
	(a+c)d*(b+d) | 10 | 3 | 
	cb+(a+c)d*(b+d) | 
	(a+d+c+d)(b*+b?) | 
	adddb | 
	cdbd | 
| 99 | 
	(a?+ab)(a+c)* | 11 | 3 | 
	(ab)?(a+c)* | 9 | 3 | 
	cc+(ab)?(a+c)* | 
	a*(b+b)c?* | 
	cccccaaa | 
	aabcaaaa | 
			Subsets and Splits
				
	
				
			
				
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