| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it had become [art] | 77 |
|
| 2 | it [vb past] become [art] | 77 |
|
| 3 | it [vb past] become a | 55 |
|
| 4 | it [vb past] become a | 46 |
|
| 5 | it [vb past] become the | 20 |
|
| 6 | it [vb past] become the | 20 |
|
| 7 | it [vb past] become an | 9 |
|
