| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [pron] have been [v-ing] | 588 |
|
| 2 | what [pron] have been [v-ing] | 407 |
|
| 3 | [verb] what [pron] have been | 201 |
|
| 4 | [verb] what have been [v-ing] | 34 |
|
