| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [adv] | 1645 |
|
| 2 | have been [v-ing] for | 1564 |
|
| 3 | been [v-ing] for [adv] | 130 |
|
| 4 | have been for [adv] | 30 |
|
