| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [pron] [verb] been at it | 9 |
|
| 2 | [coord] [pron] [verb] been at it | 6 |
|
| 3 | [pron] [verb] been at it [prep] | 11 |
|
| 4 | [pron] [verb] been at it [prep] | 11 |
|
| 5 | [pron] [verb] been at it for | 8 |
|
| 6 | [pron] [verb] been at it for | 8 |
|
| 7 | [pron] [verb] been at it [adj] | 5 |
|
