| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] if it [verb] | 46 |
|
| 2 | [modal v] [vb infin] if it is | 27 |
|
| 3 | [modal v] [vb infin] it is [verb] | 20 |
|
| 4 | [vb infin] if it is [verb] | 15 |
|
