| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] a | 2593 |
|
| 2 | been [v-ing] a | 1008 |
|
| 3 | be driving a | 95 |
|
| 4 | [be] driving a | 95 |
|
| 5 | been driving [art] | 18 |
|
| 6 | [been] driving a | 11 |
|
| 7 | been drive a | 11 |
|
