| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | might have [verb] a | 316 |
|
| 2 | might have [vb pp] a | 289 |
|
| 3 | [modal v] have become a | 36 |
|
| 4 | might have become [art] | 13 |
|
| 5 | might have become [art] | 13 |
|
| 6 | might have become a | 10 |
|
| 7 | might [verb] become a | 10 |
|
| 8 | might have become a | 10 |
|
