| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [vb infin] to [be] [adj] | 857 |
|
| 2 | could [adv] [vb infin] to [be] | 130 |
|
| 3 | could [adv] [vb infin] [be] [adj] | 92 |
|
| 4 | could [vb infin] to [be] [adj] | 30 |
|
| 5 | could [adv] [vb infin] to [adj] | 28 |
|
