| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [verb] [been] [verb] [prep] [det] | 28 |
|
| 2 | must [verb] [been] [verb] [prep] [det] | 28 |
|
| 3 | [vb mod] [verb] [been] [verb] for [det] | 26 |
|
| 4 | [modal v] [verb] [been] [verb] for [det] | 26 |
|
| 5 | must [verb] [been] [verb] for [adj] | 8 |
|
| 6 | must [verb] [been] [verb] for [det] | 5 |
|
| 7 | must [verb] [be] [verb] for [det] | 5 |
|
| 8 | must [verb] [been] [verb] for [det] | 5 |
|
