| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] they used to [be] | 73 |
|
| 2 | but [pron] used to [be] | 25 |
|
| 3 | but [pers pn] used to [be] | 18 |
|
| 4 | but they [vb mod] to [be] | 6 |
|
| 5 | but they [modal v] to [be] | 6 |
|
| 6 | but they used [prep] [be] | 5 |
|
| 7 | but they used to [be] | 5 |
|
| 8 | but they used to [be] | 5 |
|
