| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [pers pn] have been [v-ing] | 523 |
|
| 2 | what [pers pn] have been [v-ing] | 403 |
|
| 3 | [verb] what [pers pn] have been | 199 |
|
| 4 | [verb] what have been [v-ing] | 34 |
|
