| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] when [art] [noun sg] | 451 |
|
| 2 | 1973 when [art] [noun] | 9 |
|
| 3 | 1973 [adv] [art] [noun sg] | 7 |
|
| 4 | 1973 when [art] [noun sg] | 7 |
|
