| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [prep] [noun] | 2338 |
|
| 2 | then [prep] [noun] | 1653 |
|
| 3 | [modal v] then [prep] | 19 |
|
| 4 | [modal v] then [noun] | 12 |
|
