| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] been [adj] [noun sg] | 61 |
|
| 2 | [modal v] [vb infin] been some [noun sg] | 60 |
|
| 3 | must [vb infin] been some [noun] | 34 |
|
| 4 | must [vb infin] been [det] [noun sg] | 34 |
|
| 5 | must [vb infin] [be] some [noun sg] | 29 |
|
| 6 | must [verb] been some [noun sg] | 29 |
|
| 7 | must [vb infin] be some [noun sg] | 29 |
|
| 8 | must [vb infin] been some [noun sg] | 29 |
|
| 9 | must [vb infin] [been] some [noun sg] | 29 |
|
