| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is necessary [verb] [adj] [noun sg] | 61 |
|
| 2 | is necessary [to-vb] [adj] [noun sg] | 61 |
|
| 3 | is necessary [verb] [det] [noun sg] | 30 |
|
| 4 | is necessary [verb] [adj] [noun sg] | 29 |
|
| 5 | is necessary [verb] some [noun sg] | 13 |
|
| 6 | is necessary [verb] some [noun sg] | 13 |
|
| 7 | is necessary [verb] this [noun sg] | 7 |
|
| 8 | is necessary [verb] this [noun sg] | 7 |
|
| 9 | is necessary [verb] that [noun sg] | 6 |
|
| 10 | is necessary [verb] that [noun sg] | 6 |
|
| 11 | is necessary have [adj] [noun sg] | 5 |
|
| 12 | is necessary to have [adj] [noun sg] | 5 |
|
