| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but they [vb mod] to be | 6 |
|
| 2 | but they [vb mod] to be | 6 |
|
| 3 | but they [vb mod] to be | 6 |
|
| 4 | but they used to be | 5 |
|
