| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb mod] [verb] be unthinkable | 8 |
|
| 2 | which [vb mod] have [be] unthinkable | 8 |
|
| 3 | which [vb mod] [vb infin] [be] unthinkable | 8 |
|
| 4 | which would [verb] [be] unthinkable | 8 |
|
| 5 | which [vb mod] [verb] [been] unthinkable | 8 |
|
| 6 | which [vb mod] [verb] been unthinkable | 8 |
|
| 7 | which [vb mod] have [be] unthinkable | 8 |
|
