| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at a [num] | 58 |
|
| 2 | [verb] at a hundred | 31 |
|
| 3 | [vb pp] at a [num] | 31 |
|
| 4 | [v-ing] at a [num] | 19 |
|
| 5 | do at a [num] | 8 |
|
| 6 | done at a [num] | 8 |
|
