| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [v-ing] [prep] | 1064 |
|
| 2 | [conj] has been [v-ing] | 175 |
|
| 3 | [conj] has been [prep] | 120 |
|
| 4 | [conj] been [v-ing] [prep] | 11 |
|
