| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] be [verb] [modal v] | 262 |
|
| 2 | be [verb] [modal v] [be] | 231 |
|
| 3 | [prep] [verb] [modal v] [be] | 143 |
|
| 4 | [prep] be [modal v] [be] | 6 |
|
