| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | in [noun] 1990 it | 15 |
|
| 2 | in [noun prp] 1990 it | 14 |
|
| 3 | in 1990 [conj] it | 6 |
|
| 4 | in 1990 it [be] | 11 |
|
| 5 | in 1990 it be | 11 |
|
| 6 | in 1990 it [was/were] | 8 |
|
| 7 | in 1990 it [verb] | 8 |
|
| 8 | in 1990 it [vb past] | 8 |
|
| 9 | in 1990 it was | 8 |
|
