| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] up the [noun] | 22 |
|
| 2 | must [verb] up the [noun] | 22 |
|
| 3 | [vb mod] keep up the [noun] | 15 |
|
| 4 | [modal v] keep up the [noun] | 15 |
|
| 5 | must keep up the [noun] | 5 |
|
| 6 | must keep up [art] [noun] | 5 |
|
| 7 | must keep [adv] the [noun] | 5 |
|
| 8 | must keep up the [noun] | 5 |
|
| 9 | must keep up the [noun] | 5 |
|
| 10 | must keep [adv prt] the [noun] | 5 |
|
