| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [vb infin] [be] | 501 |
|
| 2 | could [adv] [vb infin] [noun prp] | 181 |
|
| 3 | could [vb infin] [be] [noun prp] | 52 |
|
| 4 | [adv] [vb infin] [be] [noun prp] | 32 |
|
| 5 | could [adv] [be] [noun prp] | 22 |
|
