| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [num] [prep] | 12 |
|
| 2 | have been [v-ing] [num] of | 10 |
|
| 3 | have been [v-ing] [num] of | 10 |
|
| 4 | have been [v-ing] one [prep] | 6 |
|
