| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at it [prep] | 405 |
|
| 2 | [am/are] [verb] it [prep] | 321 |
|
| 3 | [am/are] [verb] at [prep] | 46 |
|
| 4 | [am/are] [verb] at it | 45 |
|
