| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [vb pp] two year [adv] | 13 |
|
| 2 | [verb] [been] [vb pp] two years [adv] | 13 |
|
| 3 | [verb] been [vb pp] two year [adv] | 13 |
|
| 4 | had [been] [vb pp] two year [adv] | 10 |
|
| 5 | [vb past] [been] [vb pp] two year [adv] | 10 |
|
| 6 | [verb] [been] [vb pp] two year before | 5 |
|
