| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have been [prep] | 294 |
|
| 2 | must [vb infin] been [prep] | 294 |
|
| 3 | must have been [prep] | 289 |
|
| 4 | must [verb] been in | 89 |
|
| 5 | must [verb] been like | 42 |
|
| 6 | must [verb] been at | 40 |
|
| 7 | must [verb] been on | 20 |
|
| 8 | must [verb] been for | 14 |
|
| 9 | must [verb] been about | 10 |
|
| 10 | must [verb] been to | 8 |
|
| 11 | must [verb] been with | 7 |
|
| 12 | must [verb] been worth | 6 |
|
| 13 | must [verb] been within | 5 |
|
| 14 | must [verb] been of | 5 |
|
| 15 | must [verb] been from | 5 |
|
| 16 | must [verb] been near | 5 |
|
| 17 | must [verb] been among | 5 |
|
| 18 | must 've been [prep] | 5 |
|
