| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] at a [adj] [noun] | 501 |
|
| 2 | [v-ing] at a [adj] [noun sg] | 483 |
|
| 3 | [verb] at a [adj] time | 95 |
|
| 4 | [v-ing] [prep] a [adj] time | 90 |
|
| 5 | [v-ing] [prep] a [adj] time | 90 |
|
| 6 | [v-ing] at [art] [adj] time | 24 |
|
| 7 | [v-ing] at a [adj] time | 9 |
|
| 8 | [v-ing] at a [adj] time | 8 |
|
| 9 | [v-ing] at a [adj] time | 8 |
|
