| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] [art] [noun] | 83060 |
|
| 2 | back [prep] [art] [noun] | 12678 |
|
| 3 | [v-ing] back [prep] [art] | 1550 |
|
| 4 | [v-ing] back [prep] [noun] | 897 |
|
| 5 | [v-ing] back [art] [noun] | 278 |
|
