1#pattern framesize, memory 2 3/abcd/ 4 abcd\=memory 5 abcd\=find_limits 6 7/(((((((((((((((((((((((((((((( (^abc|xyz){1,20}$ ))))))))))))))))))))))))))))))/x 8 abcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcX\=memory 9 abcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcabcX\=find_limits 10 11/ab(cd)/ 12 abcd\=memory 13 abcd\=memory,ovector=0 14