| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [verb] to | 10340 |
|
| 2 | [modal v] [verb] back to | 887 |
|
| 3 | [modal v] be [verb] back | 593 |
|
| 4 | be [verb] back to | 365 |
|
| 5 | [modal v] be back to | 58 |
|
