| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have become | 194 |
|
| 2 | who had become | 96 |
|
| 3 | who [vb past] become | 96 |
|
| 4 | who [vb base] become | 60 |
|
| 5 | who have become | 56 |
|
| 6 | who [vb -s] become | 38 |
|
| 7 | who has become | 38 |
|
