| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have found it necessary | 11 |
|
| 2 | [verb] found it necessary | 11 |
|
| 3 | [adv] found it necessary | 6 |
|
| 4 | [vb base] found it necessary | 6 |
|
| 5 | have found it necessary | 6 |
|
| 6 | found it necessary [to-vb] | 19 |
|
| 7 | found it necessary [verb] | 19 |
|
