| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [vb pp] two year | 15 |
|
| 2 | [verb] been [vb pp] two year | 15 |
|
| 3 | [verb] [been] [vb pp] two years | 15 |
|
| 4 | [vb past] [been] [vb pp] two year | 10 |
|
| 5 | had [been] [vb pp] two year | 10 |
|
