| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] 1960s when [art] | 6 |
|
| 2 | the 1960s when [art] | 6 |
|
| 3 | the 1960s when [art] | 6 |
|
| 4 | [art] 1960s when [art] | 6 |
|
| 5 | 1960s when [art] [adj] | 7 |
|
| 6 | 1960s when [art] [adj] | 6 |
|
