| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] [det] [num] | 13 |
|
| 2 | have been [verb] some [num] | 9 |
|
| 3 | had been [verb] [det] [num] | 8 |
|
| 4 | have been [v-ing] [det] [num] | 5 |
|
