| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have become a | 1492 |
|
| 2 | [vb -s] become a | 729 |
|
| 3 | has become a | 720 |
|
| 4 | had become a | 552 |
|
| 5 | [vb past] become a | 552 |
|
| 6 | [vb base] become a | 119 |
|
| 7 | have become a | 108 |
|
| 8 | [vb infin] become a | 48 |
|
| 9 | have become a | 47 |
|
| 10 | [to-vb] become a | 27 |
|
| 11 | to have become a | 27 |
|
| 12 | [v-ing] become a | 15 |
|
| 13 | having become a | 15 |
|
| 14 | 've become a | 11 |
|
| 15 | 's become a | 9 |
|
