| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | used [to-vb] and [verb] at | 6 |
|
| 2 | used [to-vb] [conj] [vb infin] at | 6 |
|
| 3 | used [to-vb] [coord] [verb] at | 6 |
|
| 4 | used [to-vb] [conj] [verb] at | 6 |
|
| 5 | used [to-vb] and [verb] at | 6 |
|
