| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] to keep up the pressure | 10 |
|
| 2 | [vb pp] to keep up the pressure | 5 |
|
| 3 | to keep up the pressure [prep] | 7 |
|
| 4 | to keep up the pressure [prep] | 7 |
|
| 5 | to keep up the pressure on | 6 |
|
| 6 | to keep up the pressure on | 6 |
|
