| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] have been possible [prep] [art] | 19 |
|
| 2 | not have been possible [prep] [art] | 15 |
|
| 3 | [not/n't] have been possible [prep] [art] | 15 |
|
| 4 | not have been possible [prep] [art] | 15 |
|
| 5 | [modal v] have been possible [prep] [art] | 8 |
|
| 6 | [vb mod] have been possible [prep] [art] | 8 |
|
| 7 | have been possible [prep] [art] [noun] | 24 |
|
| 8 | have been possible [prep] [art] [noun sg] | 18 |
|
