| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | before [v-ing] [art] formal [noun sg] | 6 |
|
| 2 | before [v-ing] [art] formal [noun sg] | 6 |
|
| 3 | before [v-ing] a formal [noun sg] | 5 |
|
| 4 | before [v-ing] a formal [noun sg] | 5 |
|
