| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] he could come [adv] [prep] | 9 |
|
| 2 | he could n't come [adv] [prep] | 5 |
|
| 3 | he could not come [adv] [prep] | 5 |
|
| 4 | he could [adv] come [adv] [prep] | 5 |
|
| 5 | he could [not/n't] come [adv] [prep] | 5 |
|
