| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | year it is [verb] | 28 |
|
| 2 | year it is [vb pp] | 23 |
|
| 3 | year it is [verb] | 18 |
|
| 4 | years it is [verb] | 10 |
|
| 5 | year it is estimate | 6 |
|
| 6 | year it is estimated | 6 |
|
