| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [adv] a [noun] | 3008 |
|
| 2 | [v-ing] [adv] a [noun sg] | 2865 |
|
| 3 | [verb] [adv] a period | 75 |
|
| 4 | [v-ing] [adv] [art] period | 19 |
|
| 5 | [v-ing] [adv] [art] period | 19 |
|
| 6 | [v-ing] [adv] a period | 14 |
|
| 7 | [v-ing] [adv] a period | 14 |
|
