| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] 1990 [pers pn] was | 20 |
|
| 2 | [prep] 1990 it was | 12 |
|
| 3 | in 1990 [pers pn] was | 12 |
|
| 4 | [prep] 1990 he was | 5 |
|
