| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] it be necessary for | 11 |
|
| 2 | [coord] it [be] necessary for | 11 |
|
| 3 | [coord] it [be] necessary for | 11 |
|
| 4 | [coord] it [is] necessary for | 8 |
|
| 5 | and it [be] necessary for | 6 |
|
| 6 | [coord] it is necessary for | 6 |
|
