| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] back [prep] [art] [noun] | 1075 |
|
| 2 | before [v-ing] [prep] [art] [noun] | 701 |
|
| 3 | before [v-ing] back [prep] [art] | 55 |
|
| 4 | before [v-ing] back [prep] [noun] | 42 |
|
