| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [adv] have been possible | 16 |
|
| 2 | [modal v] [adv] have been possible | 16 |
|
| 3 | would [adv] have been possible | 14 |
|
| 4 | would [adv] have been possible | 14 |
|
| 5 | [adv] have been possible [prep] | 9 |
|
| 6 | [adv] have been possible [prep] | 9 |
|
