| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] to | 6486 |
|
| 2 | have been refer [prep] | 143 |
|
| 3 | have been refer [prep] | 143 |
|
| 4 | have [be] refer to | 125 |
|
| 5 | [verb] been refer to | 125 |
|
| 6 | have [been] refer to | 125 |
|
| 7 | have been refer to | 125 |
|
| 8 | have be refer to | 125 |
|
