| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it for [pron] | 1233 |
|
| 2 | [verb] it necessary for | 38 |
|
| 3 | it necessary for [pron] | 17 |
|
| 4 | [verb] necessary for [pron] | 12 |
|
