1 (()|.)(b) ab (0,2)(0,1)(1,2)-1 (()|.)(b) ab (0,2)(0,1)(1,2)#2 (()|[ab])(b) ab (0,2)(0,1)(?,?)(1,2)#-2 (()|[ab])(b) ab (1,2)(1,1)(1,1)(1,2)#3 (()|[ab])+b aaab (0,4)(2,3)(?,?)#-3 (()|[ab])+b aaab (3,4)(3,3)(3,3)11 (.|())(b) ab (0,2)(0,1)(1,2)#12 ([ab]|())(b) ab (0,2)(0,1)(?,?)(1,2)#14 ([ab]|())+b aaab (0,4)(2,3)(?,?)#-14 ([ab]|())+b aaab (0,4)(3,3)(3,3)20 (.?)(b) ab (0,2)(0,1)(1,2)