| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [subord] [art] [noun sg] | 888 |
|
| 2 | be necessary [subord] [art] | 105 |
|
| 3 | necessary [subord] [art] [noun sg] | 89 |
|
| 4 | be necessary [subord] [noun sg] | 22 |
|
| 5 | be necessary [art] [noun sg] | 6 |
|
