| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] are necessary for | 16 |
|
| 2 | [that] are necessary for | 11 |
|
| 3 | that are necessary for | 11 |
|
| 4 | that are necessary for | 11 |
|
| 5 | [subord] are necessary for | 5 |
|
| 6 | as are necessary for | 5 |
|
| 7 | as are necessary for | 5 |
|
