| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have [verb] | 9021 |
|
| 2 | [pron] have become | 2637 |
|
| 3 | [Wh det] have become | 459 |
|
| 4 | which [verb] become | 336 |
|
| 5 | which have become | 318 |
|
