| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] [adv] [verb] [conj] | 390 |
|
| 2 | it [modal v] [adv] [verb] [conj] | 236 |
|
| 3 | [pron] [modal v] therefore [verb] [conj] | 52 |
|
| 4 | it [modal v] therefore [verb] [conj] | 15 |
|
