| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | 've been [v-ing] [adv] for | 58 |
|
| 2 | been [v-ing] [adv] for a | 47 |
|
| 3 | 've been [adv] for a | 23 |
|
| 4 | 've been [v-ing] for a | 19 |
|
| 5 | 've been [v-ing] [adv] a | 11 |
|
