| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | in [noun prp] 1990 when [pers pn] | 5 |
|
| 2 | in [noun] 1990 when [pers pn] | 5 |
|
| 3 | in 1990 when [pers pn] be | 6 |
|
| 4 | in 1990 when [pers pn] [was/were] | 6 |
|
| 5 | in 1990 when [pers pn] [be] | 6 |
|
| 6 | in 1990 when [pers pn] was | 5 |
|
