| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [adv] [prep] a [noun] | 104 |
|
| 2 | [vb mod] [vb infin] on [prep] a [noun] | 34 |
|
| 3 | [modal v] [vb infin] on [prep] a [noun] | 34 |
|
| 4 | could [vb infin] on [prep] [art] [noun] | 19 |
|
| 5 | could [vb infin] on [prep] [art] [noun] | 19 |
|
| 6 | could [vb infin] on [prep] a [noun] | 6 |
|
| 7 | could [vb infin] on [prep] a [noun] | 6 |
|
| 8 | could [vb infin] on [prep] a [noun] | 6 |
|
| 9 | could [verb] on [prep] a [noun] | 6 |
|
