| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv prt] [conj] [pron] could | 388 |
|
| 2 | [adv] before [pron] could | 148 |
|
| 3 | [adv prt] before [pron] [vb mod] | 102 |
|
| 4 | [adv prt] before [pron] [modal v] | 102 |
|
| 5 | [adv prt] before [pron] could | 73 |
|
