| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] back [prep] [art] | 1550 |
|
| 2 | [v-ing] [prep] [art] time | 371 |
|
| 3 | back [prep] [art] time | 77 |
|
| 4 | [v-ing] back [prep] time | 32 |
|
