| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] have been [v-ing] | 9086 |
|
| 2 | what [pers pn] have been | 756 |
|
| 3 | what have been [v-ing] | 191 |
|
| 4 | what [pers pn] been [v-ing] | 24 |
|
