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