| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [be] [prep] | 297 |
|
| 2 | [vb infin] [be] think [prep] | 39 |
|
| 3 | must [vb infin] think [prep] | 16 |
|
| 4 | must [vb infin] [be] think | 12 |
|
| 5 | must [be] think [prep] | 11 |
|
