| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] [vb pp] [prep] a | 2014 |
|
| 2 | [adv] [vb pp] [prep] a five-year | 23 |
|
| 3 | is [vb pp] [prep] a five-year | 16 |
|
