| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] common [verb] [prep] | 5 |
|
| 2 | it [be] common [to-vb] [prep] | 5 |
|
| 3 | it be common [verb] [prep] | 5 |
|
| 4 | it [be] common [verb] [prep] | 5 |
|
| 5 | it is common [verb] [prep] | 5 |
|
