| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [verb] been [prep] | 294 |
|
| 2 | must [verb] been [prep] | 294 |
|
| 3 | [modal v] [verb] been worth | 28 |
|
| 4 | must [verb] [been] worth | 6 |
|
| 5 | must [verb] [be] worth | 6 |
|
| 6 | must [verb] be worth | 6 |
|
| 7 | must [verb] been worth | 6 |
|
