| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] ten year | 59 |
|
| 2 | [been] [vb pp] year | 12 |
|
| 3 | [been] ten year | 11 |
|
| 4 | [been] [vb pp] ten | 10 |
|
