1# 2# Tests: a[ab]*a{2,3} 3# 4t 0 1 a 5t 1 1 a 6t 1 1 b 7c 1 2 2 3 a 8f 2 9------- 10a 11a 12a 13=> 14# Pass 15a 16b 17a 18a 19=> 20# Pass 21a 22a 23a 24a 25a 26a 27a 28a 29a 30=> 31# Pass 32a 33b 34a 35=> 36# Fail 37a 38b 39a 40a 41b 42=> 43# Fail 44