| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have come about | 32 |
|
| 2 | [verb] come about | 32 |
|
| 3 | [vb base] come about | 13 |
|
| 4 | [vb -s] come about | 12 |
|
| 5 | has come about | 11 |
|
| 6 | 've come about | 9 |
|
| 7 | [vb past] come about | 7 |
|
| 8 | had come about | 7 |
|
