| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] back [prep] [art] | 1550 |
|
| 2 | [v-ing] [prep] [art] [num] | 1172 |
|
| 3 | back [prep] [art] [num] | 268 |
|
| 4 | [v-ing] back [prep] [num] | 124 |
|
| 5 | [v-ing] back [art] [num] | 5 |
|
