| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] become a matter | 19 |
|
| 2 | have become a matter | 19 |
|
| 3 | [vb -s] become a matter | 9 |
|
| 4 | has become a matter | 9 |
|
| 5 | had become a matter | 8 |
|
| 6 | [vb past] become a matter | 8 |
|
