| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [vb pp] [prep] | 7113 |
|
| 2 | and be [vb pp] [prep] | 494 |
|
| 3 | and could be [vb pp] | 232 |
|
| 4 | and could be [prep] | 17 |
|
