| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [adv] [prep] | 12534 |
|
| 2 | [be] [v-ing] [adv prt] [prep] | 7277 |
|
| 3 | [be] [verb] back [prep] | 2618 |
|
| 4 | [be] [v-ing] back [prep] | 772 |
|
| 5 | [be] [v-ing] back [prep] | 772 |
|
