1 (a|ab)(c|bcd) abcd (0,4)(0,1)(1,4) 2 (a|ab)(bcd|c) abcd (0,4)(0,1)(1,4) 3 (ab|a)(c|bcd) abcd (0,4)(0,1)(1,4) 4 (ab|a)(bcd|c) abcd (0,4)(0,1)(1,4) 5 ((a|ab)(c|bcd))(d*) abcd (0,4)(0,4)(0,1)(1,4)(4,4) 6 ((a|ab)(bcd|c))(d*) abcd (0,4)(0,4)(0,1)(1,4)(4,4) 7 ((ab|a)(c|bcd))(d*) abcd (0,4)(0,4)(0,1)(1,4)(4,4) 8 ((ab|a)(bcd|c))(d*) abcd (0,4)(0,4)(0,1)(1,4)(4,4) 9 (a|ab)((c|bcd)(d*)) abcd (0,4)(0,2)(2,4)(2,3)(3,4) 10 (a|ab)((bcd|c)(d*)) abcd (0,4)(0,2)(2,4)(2,3)(3,4) 11 (ab|a)((c|bcd)(d*)) abcd (0,4)(0,2)(2,4)(2,3)(3,4) 12 (ab|a)((bcd|c)(d*)) abcd (0,4)(0,2)(2,4)(2,3)(3,4) 13 (a*)(b|abc) abc (0,3)(0,0)(0,3) 14 (a*)(abc|b) abc (0,3)(0,0)(0,3) 15 ((a*)(b|abc))(c*) abc (0,3)(0,3)(0,0)(0,3)(3,3) 16 ((a*)(abc|b))(c*) abc (0,3)(0,3)(0,0)(0,3)(3,3) 17 (a*)((b|abc)(c*)) abc (0,3)(0,1)(1,3)(1,2)(2,3) 18 (a*)((abc|b)(c*)) abc (0,3)(0,1)(1,3)(1,2)(2,3) 19 (a*)(b|abc) abc (0,3)(0,0)(0,3) 20 (a*)(abc|b) abc (0,3)(0,0)(0,3) 21 ((a*)(b|abc))(c*) abc (0,3)(0,3)(0,0)(0,3)(3,3) 22 ((a*)(abc|b))(c*) abc (0,3)(0,3)(0,0)(0,3)(3,3) 23 (a*)((b|abc)(c*)) abc (0,3)(0,1)(1,3)(1,2)(2,3) 24 (a*)((abc|b)(c*)) abc (0,3)(0,1)(1,3)(1,2)(2,3) 25 (a|ab) ab (0,2)(0,2) 26 (ab|a) ab (0,2)(0,2) 27 (a|ab)(b*) ab (0,2)(0,2)(2,2) 28 (ab|a)(b*) ab (0,2)(0,2)(2,2)