| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [verb] by | 1302 |
|
| 2 | [modal v] be follow by | 220 |
|
| 3 | could be follow [prep] | 14 |
|
| 4 | could be follow [prep] | 14 |
|
| 5 | could be follow by | 11 |
|
| 6 | could [be] follow by | 11 |
|
| 7 | could [be] follow by | 11 |
|
| 8 | could be follow by | 11 |
|
