| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have [been] [verb] | 3325 |
|
| 2 | have [been] [verb] a | 1929 |
|
| 3 | who have [verb] a | 1028 |
|
| 4 | who have [been] a | 152 |
|
