| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [vb infin] [adv prt] for | 14 |
|
| 2 | could n't [vb infin] [adv prt] for | 9 |
|
| 3 | could not [vb infin] [adv prt] for | 5 |
|
