| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | as it is [verb] | 562 |
|
| 2 | as it is [vb pp] | 490 |
|
| 3 | [conj] it is required | 37 |
|
| 4 | as it [be] required | 8 |
|
| 5 | as it be required | 8 |
|
| 6 | as it [is] required | 6 |
|
| 7 | as it is require | 6 |
|
| 8 | as [pron] is required | 6 |
|
