| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [verb] been [adj] | 82 |
|
| 2 | [conj] could [adv] [verb] been | 79 |
|
| 3 | [conj] could [adv] [verb] [adj] | 39 |
|
| 4 | [conj] [adv] [verb] been [adj] | 30 |
|
