| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] been [prep] [adj] [noun] | 60 |
|
| 2 | must [vb infin] been [prep] [adj] [noun] | 28 |
|
| 3 | must [vb infin] be [prep] [adj] [noun] | 10 |
|
| 4 | must [verb] been [prep] [adj] [noun] | 10 |
|
| 5 | must [vb infin] [be] [prep] [adj] [noun] | 10 |
|
| 6 | must [vb infin] [been] [prep] [adj] [noun] | 10 |
|
| 7 | must [vb infin] been [prep] [adj] [noun] | 10 |
|
