| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at an alarming [noun sg] | 27 |
|
| 2 | [verb] at a alarming rate | 26 |
|
| 3 | [v-ing] at a alarming [noun sg] | 12 |
|
| 4 | grow at a alarming [noun sg] | 7 |
|
| 5 | [vb pp] at a alarming [noun sg] | 6 |
|
