1*57718be8SEnji Cooper# ordinary repetitions 2*57718be8SEnji Cooperab*c & abc abc 3*57718be8SEnji Cooperab+c - abc abc 4*57718be8SEnji Cooperab?c - abc abc 5*57718be8SEnji Coopera\(*\)b b a*b a*b 6*57718be8SEnji Coopera\(**\)b b ab ab 7*57718be8SEnji Coopera\(***\)b bC BADRPT 8*57718be8SEnji Cooper*a b *a *a 9*57718be8SEnji Cooper**a b a a 10*57718be8SEnji Cooper***a bC BADRPT 11