| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | used [to-vb] at [art] | 38 |
|
| 2 | used [verb] at [art] | 38 |
|
| 3 | used to stand [prep] [art] | 17 |
|
| 4 | used to stand [prep] [art] | 17 |
|
| 5 | used to stand at [art] | 5 |
|
| 6 | used to stand at [art] | 5 |
|
| 7 | [modal v] to stand at [art] | 5 |
|
| 8 | used stand at [art] | 5 |
|
