| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] i [adv] | 289 |
|
| 2 | be [v-ing] [pron] back | 144 |
|
| 3 | be [v-ing] i [adv prt] | 136 |
|
| 4 | be [verb] i back | 11 |
|
| 5 | be [v-ing] i back | 9 |
|
| 6 | [be] [v-ing] i back | 9 |
|
