| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [prep] [det] | 476 |
|
| 2 | [conj] have been [v-ing] [prep] | 190 |
|
| 3 | [conj] have been [prep] [det] | 39 |
|
| 4 | [conj] have been [v-ing] [det] | 12 |
|
