| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | think it must be [prep] | 5 |
|
| 2 | think it must [be] [prep] | 5 |
|
| 3 | think it must be [prep] | 5 |
|
| 4 | think it must [be] [prep] | 5 |
|
| 5 | think it must [be] [prep] | 5 |
|
