| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [pron] [prep] | 21913 |
|
| 2 | [v-ing] back [prep] | 3877 |
|
| 3 | [pron] back [prep] | 3542 |
|
| 4 | [v-ing] [pron] back | 744 |
|
