| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] for [adj] of | 12 |
|
| 2 | have been [v-ing] for [num] of | 10 |
|
| 3 | have been [v-ing] for hundreds of | 7 |
|
| 4 | have been [v-ing] for hundreds of | 7 |
|
| 5 | have been [v-ing] for [adj] of | 5 |
|
