| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has sometimes been [vb pp] | 98 |
|
| 2 | have sometimes been [vb pp] | 44 |
|
| 3 | have sometimes been suggested | 11 |
|
| 4 | have sometimes been called | 10 |
|
| 5 | have sometimes been used | 6 |
|
| 6 | have sometimes been thought | 5 |
|
