| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [verb] [adv] the | 141 |
|
| 2 | [modal v] [verb] back the | 73 |
|
| 3 | must [verb] back [art] | 6 |
|
| 4 | must [verb] back [art] | 6 |
|
| 5 | must [verb] back the | 5 |
|
