| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | used [to-vb] [art] same | 15 |
|
| 2 | used [to-vb] the same | 15 |
|
| 3 | used [to-vb] the same | 15 |
|
| 4 | used to do [art] same | 6 |
|
