1 (()|.)(b) ab (0,2)(0,1)(?,?)(1,2)-1 (()|.)(b) ab (1,2)(1,1)(1,1)(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)