| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | 've been [v-ing] [pron] [prep] | 101 |
|
| 2 | 've been [v-ing] [prep] a | 50 |
|
| 3 | been [v-ing] [pron] [prep] a | 45 |
|
| 4 | 've been [v-ing] [pron] a | 9 |
|
