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