| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [conj] [pron] is necessary for | 11 |
|
| 2 | [verb] that [pron] is necessary for | 9 |
|
| 3 | [verb] that [pron] is necessary for | 9 |
|
| 4 | [verb] [that] [pron] is necessary for | 9 |
|
