| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] a [noun] | 62681 |
|
| 2 | become a [noun] | 811 |
|
| 3 | [vb past] become a | 552 |
|
| 4 | [vb past] become [noun] | 244 |
|
