| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] it used to [be] | 35 |
|
| 2 | [Wh adv] it used to [be] | 13 |
|
| 3 | how it [vb mod] to [be] | 12 |
|
| 4 | how it [modal v] to [be] | 12 |
|
| 5 | how [pron] used to [be] | 11 |
|
| 6 | how it used to [be] | 8 |
|
| 7 | how it used to [be] | 8 |
|
| 8 | how it used to [be] | 8 |
|
| 9 | how it used [prep] [be] | 8 |
|
