| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been driving for [adj] | 6 |
|
| 2 | been driving for [noun] | 6 |
|
| 3 | been driving for [noun pl] | 5 |
|
| 4 | have been driving for | 16 |
|
| 5 | [verb] been driving for | 16 |
|
| 6 | [vb past] been driving for | 8 |
|
