| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [verb] a | 538 |
|
| 2 | because it [verb] a | 267 |
|
| 3 | because it [vb past] [verb] | 140 |
|
| 4 | because it [vb past] a | 74 |
|
