| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [unc] used to be | 12 |
|
| 2 | [unc] used to be | 12 |
|
| 3 | [no cls] used to be | 7 |
|
| 4 | 's used to be | 5 |
|
| 5 | 's used to be | 5 |
|
| 6 | ['s] used to be | 5 |
|
