| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that it [be] necessary for | 21 |
|
| 2 | that it be necessary for | 21 |
|
| 3 | that it [is] necessary for | 11 |
|
| 4 | that it is necessary for | 10 |
|
| 5 | that it was necessary for | 9 |
|
| 6 | that it [was/were] necessary for | 9 |
|
