| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] it could | 515 |
|
| 2 | perhaps [pron] could | 488 |
|
| 3 | [adv] it could | 355 |
|
| 4 | perhaps it [vb mod] | 254 |
|
| 5 | perhaps it [modal v] | 254 |
|
| 6 | perhaps it could | 20 |
|
| 7 | perhaps it could | 20 |
|
