| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was [adj] [verb] [art] [noun sg] | 1720 |
|
| 2 | [be] necessary [verb] [art] [noun sg] | 486 |
|
| 3 | be necessary [verb] [art] [noun sg] | 486 |
|
| 4 | was necessary [verb] [art] [noun] | 80 |
|
| 5 | [was/were] necessary [verb] [art] [noun sg] | 69 |
|
