| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at it for a [adj] time | 9 |
|
| 2 | at it for a [adj] time | 9 |
|
| 3 | at it for a long time | 9 |
|
| 4 | at it for a long time | 9 |
|
| 5 | at it for a [adj] time | 9 |
|
| 6 | at it for a [adj] time | 9 |
|
