| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] must [vb infin] been think | 5 |
|
| 2 | [noun] must have [be] think | 5 |
|
| 3 | [noun] must [vb infin] [be] think | 5 |
|
| 4 | [noun] must [vb infin] [been] think | 5 |
|
| 5 | [noun] must [vb infin] be think | 5 |
|
