| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what used to | 86 |
|
| 2 | [prep] what used to | 86 |
|
| 3 | of what used to | 28 |
|
| 4 | of what used to | 28 |
|
| 5 | in what used to | 26 |
|
| 6 | in what used to | 26 |
|
| 7 | [verb] what used to | 15 |
|
| 8 | [conj] what used to | 9 |
|
| 9 | [coord] what used to | 7 |
|
| 10 | to what used to | 7 |
|
| 11 | to what used to | 7 |
|
| 12 | [be] what used to | 6 |
|
| 13 | on what used to | 6 |
|
| 14 | be what used to | 6 |
|
| 15 | on what used to | 6 |
|
| 16 | [is] what used to | 5 |
|
| 17 | and what used to | 5 |
|
| 18 | [v-ing] what used to | 5 |
|
| 19 | and what used to | 5 |
|
| 20 | what [pron] used to | 68 |
|
| 21 | what [pers pn] used to | 67 |
|
| 22 | what it used to | 31 |
|
| 23 | what it used to | 31 |
|
| 24 | what they used to | 22 |
|
| 25 | what they used to | 22 |
|
| 26 | what [noun] used to | 7 |
|
| 27 | what i used to | 5 |
|
| 28 | what i used to | 5 |
|
| 29 | what used to be | 139 |
|
| 30 | what used to [be] | 139 |
|
