| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have become a [adj] feature | 21 |
|
| 2 | have become a [adj] feature | 17 |
|
| 3 | has become a [adj] feature | 12 |
|
| 4 | have become a regular feature | 8 |
|
| 5 | have become a [adj] feature | 7 |
|
