Python 3.7.0

In each of the next cases, select those strings that are matched by the given regular expression.

11.7 In each of the next cases, select those strings that are matched by the given regular expression. Strings ab, a, b, the empty string ab, acb, acbc, acbd ab, a, b, the empty string aa, b, aabaa, aaaab, ba abc, 123,?.?, 3M Regular Expression a) [ab] (b) a.b (c) a?b? (d) a*b+a*