| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at a lower [noun sg] | 56 |
|
| 2 | [vb pp] at a lower [noun sg] | 28 |
|
| 3 | [verb] at a lower level | 19 |
|
| 4 | [verb] at a lower rate | 10 |
|
| 5 | [v-ing] at a lower [noun sg] | 9 |
|
| 6 | [vb -s] at a lower [noun sg] | 8 |
|
| 7 | operate at a lower [noun sg] | 6 |
|
| 8 | [verb] at a lower temperature | 6 |
|
| 9 | [verb] at a lower price | 5 |
|
| 10 | [to-vb] at a lower [noun sg] | 5 |
|
