| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must [vb infin] [prep] | 1993 |
|
| 2 | [pron] must [vb infin] think | 70 |
|
| 3 | [pron] must think [prep] | 54 |
|
| 4 | [pron] [vb infin] think [prep] | 29 |
|
| 5 | must [vb infin] think [prep] | 16 |
|
