| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] [adv] a [noun] | 84 |
|
| 2 | [verb] [prep] [adv] a year | 56 |
|
| 3 | [v-ing] [prep] [adv] [art] year | 6 |
|
