| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | before [v-ing] [pron] [prep] [art] | 162 |
|
| 2 | [v-ing] [pron] back [prep] [art] | 160 |
|
| 3 | before [v-ing] back [prep] [art] | 55 |
|
| 4 | before [v-ing] [pron] back [prep] | 12 |
|
