| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | become a [noun] | 924 |
|
| 2 | become a [noun sg] | 908 |
|
| 3 | [verb] a issue | 198 |
|
| 4 | become a issue | 44 |
|
| 5 | [vb pp] a issue | 24 |
|
| 6 | become [art] issue | 11 |
|
| 7 | become a issue | 11 |
|
