| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] the subject [prep] some | 10 |
|
| 2 | has [be] the subject of some | 10 |
|
| 3 | has be the subject [prep] some | 10 |
|
| 4 | has been the subject [prep] some | 10 |
|
