| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] be [vb pp] [prep] a | 269 |
|
| 2 | [modal v] [adv] be [vb pp] at a | 43 |
|
| 3 | [vb mod] [adv] be [vb pp] at a | 43 |
|
| 4 | could [adv] be [vb pp] at [art] | 35 |
|
| 5 | could [adv] be [vb pp] at [art] | 35 |
|
| 6 | could [adv] be [vb pp] at a | 12 |
|
| 7 | could [adv] be [vb pp] at a | 10 |
|
| 8 | could [adv] be [verb] at a | 10 |
|
| 9 | could [adv] [be] [vb pp] at a | 10 |
|
| 10 | could [adv] [be] [vb pp] at a | 10 |
|
| 11 | could [adv] be [vb pp] at a | 10 |
|
