| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] [be] [prep] | 657 |
|
| 2 | it could [verb] [be] | 516 |
|
| 3 | it could [verb] [prep] | 379 |
|
| 4 | could [verb] [be] [prep] | 114 |
|
| 5 | it could [be] [prep] | 94 |
|
