| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i could [not/n't] go [adv] | 51 |
|
| 2 | i [modal v] [not/n't] go back | 43 |
|
| 3 | [pron] could [not/n't] go back | 23 |
|
| 4 | i could [adv] go back | 15 |
|
| 5 | i could [not/n't] [verb] back | 15 |
|
