| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we 've been [v-ing] [prep] | 222 |
|
| 2 | 've been [v-ing] [prep] a | 50 |
|
| 3 | we 've been [prep] a | 18 |
|
| 4 | we 've been [v-ing] a | 14 |
|
