| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] back [prep] [art] [noun] | 328 |
|
| 2 | must [vb infin] [adv] [prep] [art] [noun] | 194 |
|
| 3 | must [vb infin] [adv prt] [prep] [art] [noun] | 111 |
|
| 4 | must [vb infin] back [prep] [art] [noun] | 37 |
|
| 5 | must [verb] back [prep] [art] [noun] | 37 |
|
| 6 | must [vb infin] back [prep] [art] [noun] | 37 |
|
| 7 | must [vb infin] back [prep] [art] [noun] | 37 |
|
