| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must have [be] [prep] | 83 |
|
| 2 | it have [be] [prep] [det] | 46 |
|
| 3 | must have [be] [prep] [det] | 26 |
|
| 4 | it must have [be] [det] | 26 |
|
| 5 | it must [be] [prep] [det] | 6 |
|
