| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [subord] a [adj] [noun sg] | 53 |
|
| 2 | necessary [subord] a [adj] [noun sg] | 10 |
|
| 3 | be necessary [subord] a [adj] | 9 |
|
| 4 | be necessary [subord] [adj] [noun sg] | 7 |
|
| 5 | be necessary [subord] a [noun sg] | 6 |
|
