| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been [vb pp] for some [noun pl] | 11 |
|
| 2 | has [been] [vb pp] for some [noun pl] | 9 |
|
| 3 | [vb -s] [been] [vb pp] for some years | 8 |
|
