| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [conj] a [noun sg] | 1243 |
|
| 2 | could be [vb pp] [conj] [noun sg] | 57 |
|
| 3 | could be [vb pp] a [noun sg] | 44 |
|
| 4 | could be [vb pp] [conj] a | 39 |
|
| 5 | could be [conj] a [noun sg] | 8 |
|
