| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | in the [adj] 1980s it | 9 |
|
| 2 | in the [adj] 1980s it | 9 |
|
| 3 | in the late 1980s it | 6 |
|
| 4 | in the late 1980s it | 6 |
|
| 5 | in the 1980s [conj] it | 5 |
|
