| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | used [to-vb] [pron] [prep] | 397 |
|
| 2 | used [to-vb] [pron] [prep] | 397 |
|
| 3 | used [verb] [pron] at | 24 |
|
| 4 | used [to-vb] [pron] at | 24 |
|
| 5 | [modal v] [to-vb] [pron] at | 24 |
|
