| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] back [prep] [art] | 1550 |
|
| 2 | but [v-ing] [prep] [art] | 286 |
|
| 3 | but back [prep] [art] | 23 |
|
| 4 | but [v-ing] back [prep] | 19 |
|
