| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [vb pp] [prep] | 16056 |
|
| 2 | has sometimes [been] [vb pp] | 98 |
|
| 3 | sometimes [been] [vb pp] [prep] | 57 |
|
| 4 | has sometimes [vb pp] [prep] | 12 |
|
