| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it necessary for [pron] | 17 |
|
| 2 | it necessary for [pron] | 17 |
|
| 3 | it necessary for [pers pn] | 11 |
|
| 4 | it necessary for he | 6 |
|
| 5 | it necessary for him | 6 |
|
