| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] it necessary | 160 |
|
| 2 | [vb past] it necessary | 160 |
|
| 3 | found it necessary | 70 |
|
| 4 | felt it necessary | 41 |
|
| 5 | made it necessary | 25 |
|
| 6 | thought it necessary | 16 |
|
