| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] must have been think | 6 |
|
| 2 | [pron] must have been think | 6 |
|
| 3 | [noun] must have been think | 5 |
|
| 4 | must have been think [prep] | 8 |
|
| 5 | must have been think [prep] | 8 |
|
| 6 | must have been think of | 5 |
|
| 7 | must have been think of | 5 |
|
