| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [be] [verb] [prep] | 320 |
|
| 2 | [vb mod] have [be] think [prep] | 27 |
|
| 3 | [modal v] have [be] think [prep] | 27 |
|
| 4 | must have [be] think [prep] | 8 |
|
| 5 | must [verb] [be] think [prep] | 8 |
|
