| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adv] used to be | 21 |
|
| 2 | it [adv] used to [be] | 21 |
|
| 3 | it always used to [be] | 5 |
|
| 4 | it always used to [be] | 5 |
|
| 5 | it never used to [be] | 5 |
|
| 6 | it never used to [be] | 5 |
|
