| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have been [v-ing] [prep] | 3338 |
|
| 2 | what [pron] have been [v-ing] | 407 |
|
| 3 | what have been [v-ing] [prep] | 67 |
|
| 4 | what [pron] have been [prep] | 66 |
|
