| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have be [verb] about | 10 |
|
| 2 | who have been [verb] about | 10 |
|
| 3 | who have be [verb] about | 10 |
|
| 4 | who have be [v-ing] about | 6 |
|
| 5 | who had be [verb] about | 5 |
|
