| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be driving a | 87 |
|
| 2 | was driving a | 43 |
|
| 3 | been driving a | 11 |
|
| 4 | 'm driving a | 9 |
|
| 5 | be driving an | 8 |
|
| 6 | is driving a | 8 |
|
| 7 | be driving a | 7 |
|
| 8 | were driving a | 5 |
|
