| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [modal v] [not/n't] have [been] | 138 |
|
| 2 | [modal v] [not/n't] have [been] [noun] | 39 |
|
| 3 | [conj] [modal v] have [been] [noun] | 20 |
|
| 4 | [conj] [modal v] [not/n't] have [noun] | 11 |
|
