| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] become [adj] | 295 |
|
| 2 | [pron] [verb] become necessary | 12 |
|
| 3 | it [verb] [verb] necessary | 12 |
|
| 4 | [pers pn] [verb] become necessary | 12 |
|
| 5 | it [verb] become necessary | 10 |
|
