| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [prep] about | 23 |
|
| 2 | have been [v-ing] for about | 20 |
|
| 3 | have been [v-ing] for about | 20 |
|
| 4 | has been [v-ing] [prep] about | 6 |
|
| 5 | have been [v-ing] [prep] about | 6 |
|
| 6 | had been [v-ing] [prep] about | 5 |
|
