| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is because it [modal v] [verb] | 6 |
|
| 2 | is because it [modal v] [verb] | 6 |
|
| 3 | is because it [modal v] [vb infin] | 6 |
|
| 4 | is because it [vb mod] [verb] | 6 |
|
