| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] [verb] at a | 316 |
|
| 2 | it [modal v] [be] [verb] at | 192 |
|
| 3 | it [modal v] [be] [verb] a | 97 |
|
| 4 | it [be] [verb] at a | 67 |
|
| 5 | it [modal v] [verb] at a | 10 |
|
