| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | as it [modal v] to | 88 |
|
| 2 | as it [vb mod] to | 88 |
|
| 3 | as it used to | 64 |
|
| 4 | as it used to | 64 |
|
| 5 | as it ought to | 15 |
|
| 6 | as it ought to | 15 |
|
