| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [Wh det] they used to be | 12 |
|
| 2 | not [Wh det] they used to be | 12 |
|
| 3 | [not/n't] [Wh det] they used to be | 12 |
|
| 4 | n't [Wh det] they used to be | 8 |
|
| 5 | [prep] [Wh det] they used to be | 5 |
|
| 6 | [prep] [Wh det] they used to be | 5 |
|
