| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been the subject [prep] | 256 |
|
| 2 | have been the subject of | 254 |
|
| 3 | has been the subject [prep] | 124 |
|
| 4 | have been the subject [prep] | 74 |
|
| 5 | had been the subject [prep] | 42 |
|
| 6 | have been the subject [prep] | 8 |
|
