| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [been] [adv] a | 133 |
|
| 2 | [vb past] [adv] a year | 51 |
|
| 3 | [been] [adv] a year | 16 |
|
| 4 | [vb past] [been] a year | 7 |
|
