| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [vb past] a | 16151 |
|
| 2 | [vb past] become a | 664 |
|
| 3 | [noun prp] become a | 488 |
|
| 4 | [noun prp] [vb past] become | 464 |
|
