| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] not keep up [art] | 7 |
|
| 2 | [vb mod] not keep up [art] | 7 |
|
| 3 | [verb] not keep up [art] | 6 |
|
| 4 | do not keep up [art] | 5 |
|
| 5 | not keep up [prep] [art] | 17 |
|
| 6 | not keep up [prep] [art] | 17 |
|
| 7 | not keep up with [art] | 16 |
|
| 8 | not keep up with [art] | 16 |
|
| 9 | not keep up [art] [noun] | 11 |
|
| 10 | not keep up [art] [noun sg] | 6 |
|
| 11 | not keep up [art] [noun pl] | 5 |
|
