| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [verb] [adj] [noun] | 79 |
|
| 2 | must [vb infin] been [adj] [noun] | 42 |
|
| 3 | [vb infin] been [verb] [adj] [noun] | 35 |
|
| 4 | must [vb infin] been [verb] [noun] | 26 |
|
| 5 | must [vb infin] been [verb] [adj] | 13 |
|
