| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it become [adj] | 1495 |
|
| 2 | it [verb] necessary | 105 |
|
| 3 | [pron] become necessary | 67 |
|
| 4 | [pers pn] become necessary | 65 |
|
| 5 | it become necessary | 63 |
|
