| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] is necessary for | 133 |
|
| 2 | [that] [pron] is necessary | 67 |
|
| 3 | [that] [pron] is for | 32 |
|
| 4 | [that] is necessary for | 10 |
|
