1 # multiple repetitions 2 a** &C BADRPT 3 a++ C BADRPT 4 a?? C BADRPT 5 a*+ C BADRPT 6 a*? C BADRPT 7 a+* C BADRPT 8 a+? C BADRPT 9 a?* C BADRPT 10 a?+ C BADRPT 11 a{1}{1} C BADRPT 12 a*{1} C BADRPT 13 a+{1} C BADRPT 14 a?{1} C BADRPT 15 a{1}* C BADRPT 16 a{1}+ C BADRPT 17 a{1}? C BADRPT 18 # repetition needs to be a number 19 #a*{b} - a{b} a{b} 20 a\{1\}\{1\} bC BADRPT 21 a*\{1\} bC BADRPT 22 a\{1\}* bC BADRPT 23