| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] at a low [noun sg] | 47 |
|
| 2 | [vb pp] at a lower [noun sg] | 28 |
|
| 3 | [vb pp] at a low level | 19 |
|
| 4 | [vb pp] at a low [noun sg] | 19 |
|
| 5 | [vb pp] at a low rate | 8 |
|
| 6 | [vb pp] at a low price | 5 |
|
