| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it had become | 293 |
|
| 2 | it [vb past] become | 291 |
|
| 3 | it [vb past] to become | 16 |
|
| 4 | it [vb past] become | 7 |
|
| 5 | it did become | 7 |
|
