| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [adv] [adv] | 404 |
|
| 2 | have been [v-ing] [adv] for | 362 |
|
| 3 | have been [adv] [adv] for | 34 |
|
| 4 | been [v-ing] [adv] [adv] for | 29 |
|
