| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | used to [conj] [pers pn] [be] | 9 |
|
| 2 | used to [subord] [pers pn] [be] | 8 |
|
| 3 | used to when [pers pn] [be] | 5 |
|
| 4 | used to when [pers pn] [be] | 5 |
|
