| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [vb infin] back [prep] [art] | 9 |
|
| 2 | may [verb] back [prep] [art] | 9 |
|
| 3 | may [verb] back [prep] the | 6 |
|
| 4 | may [verb] back [prep] the | 6 |
|
