| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [be] [verb] to | 892 |
|
| 2 | could [be] [vb pp] to | 869 |
|
| 3 | [modal v] [be] left to | 135 |
|
| 4 | [vb mod] [be] left to | 135 |
|
| 5 | could [be] left [prep] | 28 |
|
| 6 | could [be] left [prep] | 28 |
|
| 7 | could [be] left to | 11 |
|
| 8 | could [be] leave to | 11 |
|
| 9 | could [be] left to | 11 |
|
| 10 | could [be] left to | 11 |
|
