| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] [adv] for | 144 |
|
| 2 | it [is] [adv] [adv] necessary | 82 |
|
| 3 | it [is] [adv] necessary for | 69 |
|
| 4 | it [is] [adv] necessary for | 27 |
|
| 5 | [is] [adv] [adv] necessary for | 16 |
|
