| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have been [prep] [det] [noun] | 54 |
|
| 2 | [modal v] have been [prep] [det] [noun] | 54 |
|
| 3 | must have been [prep] [adj] [noun] | 28 |
|
| 4 | must [verb] been [prep] [det] [noun] | 16 |
|
| 5 | must have been [prep] [det] [noun] | 16 |
|
| 6 | must have been [prep] [det] [noun] | 16 |
|
| 7 | must have be [prep] [det] [noun] | 16 |
|
| 8 | must have [been] [prep] [det] [noun] | 16 |
|
| 9 | must have [be] [prep] [det] [noun] | 16 |
|
