| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [adv prt] [adj] | 238 |
|
| 2 | [vb infin] [adv prt] on [adj] | 179 |
|
| 3 | could [vb infin] on [adj] | 102 |
|
| 4 | could [vb infin] [adv prt] on | 71 |
|
