| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at a time [adv] | 229 |
|
| 2 | [v-ing] at a [noun sg] [adv] | 64 |
|
| 3 | [v-ing] at a [noun] [adv] | 64 |
|
| 4 | [v-ing] [prep] a time [adv] | 32 |
|
| 5 | [v-ing] [prep] a time [adv] | 32 |
|
| 6 | [v-ing] at [art] time [adv] | 29 |
|
| 7 | [v-ing] at a time [adv] | 25 |
|
| 8 | [v-ing] at a time [adv] | 25 |
|
