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1.1 misho 1: =>a{2,3}
2: a
3: aa
4: aaa
5: aaaa
6: =>ba{2,3}c
7: bac
8: baac
9: baaac
10: baaaac
11: =>a(b|c){2,3}d
12: abcd
13: acccd
14: abd
15: accccd