| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] necessary for [det] | 72 |
|
| 2 | be necessary for [det] | 72 |
|
| 3 | be necessary for [det] | 25 |
|
| 4 | [be] necessary for [det] | 25 |
|
| 5 | [is] necessary for [det] | 24 |
|
| 6 | is necessary for [det] | 23 |
|
| 7 | [be] necessary for this | 14 |
|
| 8 | [be] necessary for that | 13 |
|
| 9 | [be] necessary for all | 13 |
|
| 10 | [was/were] necessary for [det] | 10 |
|
| 11 | [am/are] necessary for [det] | 10 |
|
| 12 | are necessary for [det] | 10 |
|
| 13 | [be] necessary for any | 7 |
|
| 14 | was necessary for [det] | 7 |
|
| 15 | [be] necessary for such | 7 |
|
| 16 | [be] necessary for some | 5 |
|
