| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [v-ing] at | 140 |
|
| 2 | when [vb pp] at | 89 |
|
| 3 | when look at | 81 |
|
| 4 | when looking at | 67 |
|
| 5 | when looked at | 12 |
|
| 6 | when seen at | 9 |
|
| 7 | when see at | 9 |
|
| 8 | when winning at | 6 |
|
| 9 | when win at | 6 |
|
| 10 | when arriving at | 5 |
|
| 11 | when operate at | 5 |
|
| 12 | when arrive at | 5 |
|
| 13 | when sit at | 5 |
|
