| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | 's [modal v] to be | 5 |
|
| 2 | ['s] used to be | 5 |
|
| 3 | ['s] used to be | 5 |
|
| 4 | ['s] [vb mod] to be | 5 |
|
| 5 | ['s] [modal v] to be | 5 |
|
