| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] [adv] | 44513 |
|
| 2 | be [v-ing] [adv prt] | 20897 |
|
| 3 | be [verb] back | 4277 |
|
| 4 | [be] [v-ing] back | 1514 |
|
| 5 | be [v-ing] back | 1514 |
|
