| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [verb] been a [adj] [noun] | 577 |
|
| 2 | [modal v] [verb] been a [adj] [noun] | 577 |
|
| 3 | must [verb] been [art] [adj] [noun] | 206 |
|
| 4 | must [verb] been [art] [adj] [noun] | 206 |
|
| 5 | must [verb] been a [adj] [noun] | 188 |
|
| 6 | must [verb] been a [adj] [noun] | 177 |
|
| 7 | must [verb] [be] a [adj] [noun] | 166 |
|
| 8 | must [verb] be a [adj] [noun] | 166 |
|
| 9 | must [verb] [been] a [adj] [noun] | 165 |
|
| 10 | must [verb] been a [adj] [noun] | 165 |
|
