| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [pers pn] have been [v-ing] | 403 |
|
| 2 | know [pers pn] have been [v-ing] | 53 |
|
| 3 | know what [pers pn] have been | 44 |
|
| 4 | know what have been [v-ing] | 11 |
|
