| Regexp: ((a|b|c)def) | |
| adef: Ok | |
| bdef: Ok | |
| adefg: Fail | |
| aaef: Fail | |
| Regexp: ((a|b|c|d|e|f)?(g|h|i)+(k|l)*) | |
| g: Ok | |
| gi: Ok | |
| fil: Ok | |
| gikl: Ok | |
| cghhhiill: Ok | |
| ak: Fail | |
| Regexp: ((a|b|c)def) | |
| adef: Ok | |
| bdef: Ok | |
| adefg: Fail | |
| aaef: Fail | |
| Regexp: ((a|b|c|d|e|f)?(g|h|i)+(k|l)*) | |
| g: Ok | |
| gi: Ok | |
| fil: Ok | |
| gikl: Ok | |
| cghhhiill: Ok | |
| ak: Fail | |