| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] have been driving [adv] | 8 |
|
| 2 | [pers pn] [vb past] been driving [adv] | 8 |
|
| 3 | [pers pn] had been driving [adv] | 7 |
|
