| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is necessary for [pron] [to-vb] | 29 |
|
| 2 | is necessary for [pers pn] [verb] | 25 |
|
| 3 | is necessary for us [verb] | 9 |
|
| 4 | is necessary for we [verb] | 9 |
|
| 5 | is necessary for he [verb] | 5 |
|
| 6 | is necessary for me [verb] | 5 |
|
| 7 | is necessary for him [verb] | 5 |
|
| 8 | is necessary for i [verb] | 5 |
|
