| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] for two years | 17 |
|
| 2 | [vb -s] been [vb pp] for two | 16 |
|
| 3 | [vb -s] been [vb pp] for years | 6 |
|
| 4 | [vb -s] [vb pp] for two years | 5 |
|
