| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at an [adj] rate | 111 |
|
| 2 | [verb] at an alarming [noun] | 27 |
|
| 3 | [verb] at an alarming [noun sg] | 27 |
|
| 4 | [verb] at [art] alarming rate | 26 |
|
| 5 | [verb] [prep] an alarming rate | 26 |
|
| 6 | [verb] at [art] alarming rate | 26 |
|
| 7 | [verb] at an alarming rate | 26 |
|
| 8 | [verb] at a alarming rate | 26 |
|
