| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which has [verb] a | 272 |
|
| 2 | which has [vb pp] a | 270 |
|
| 3 | [pron] has become a | 205 |
|
| 4 | which have become a | 57 |
|
| 5 | which [verb] become a | 57 |
|
| 6 | which has become [art] | 47 |
|
| 7 | [Wh det] has become a | 46 |
|
| 8 | which has become a | 29 |
|
| 9 | which [vb -s] become a | 29 |
|
| 10 | which has become a | 29 |
|
