| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] [art] year | 16 |
|
| 2 | it [vb past] [art] year | 16 |
|
| 3 | it [vb past] a year | 14 |
|
| 4 | it took [art] year | 8 |
|
