| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] be driving [adv] | 12 |
|
| 2 | [vb past] [been] driving [adv] | 12 |
|
| 3 | [vb past] been driving [adv] | 12 |
|
| 4 | had [be] driving [adv] | 11 |
|
| 5 | [vb past] [be] driving [adv] | 9 |
|
