# certain syntax errors and non-errors | C EMPTY | b | | * C BADRPT * b * * + C BADRPT ? C BADRPT "" &C EMPTY () - abc @abc \(\) b abc @abc a||b C EMPTY |ab C EMPTY ab| C EMPTY (|a)b C EMPTY (a|)b C EMPTY (*a) C BADRPT (+a) C BADRPT (?a) C BADRPT ({1}a) C BADRPT \(\{1\}a\) bC BADRPT (a|*b) C BADRPT (a|+b) C BADRPT (a|?b) C BADRPT (a|{1}b) C BADRPT ^* C BADRPT ^* b * * ^+ C BADRPT ^? C BADRPT ^{1} C BADRPT ^\{1\} bC BADRPT |