| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [v-ing] [prep] | 6841 |
|
| 2 | [been] [v-ing] [prep] | 6838 |
|
| 3 | [be] [v-ing] behind | 221 |
|
| 4 | [been] [verb] behind | 50 |
|
| 5 | [been] [v-ing] behind | 19 |
|
