| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [prep] a [noun sg] | 643 |
|
| 2 | which could [vb infin] a [noun sg] | 52 |
|
| 3 | which could [vb infin] [prep] a | 40 |
|
| 4 | which could [vb infin] [prep] [noun sg] | 26 |
|
