| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it [was/were] [vb pp] [num] years | 11 |
|
| 2 | [subord] it was [verb] [num] years | 11 |
|
| 3 | when it [was/were] [verb] [num] years | 5 |
|
