| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] when [art] [noun sg] | 451 |
|
| 2 | 1987 when [art] [noun] | 12 |
|
| 3 | 1987 [adv] [art] [noun sg] | 9 |
|
| 4 | 1987 when [art] [noun sg] | 8 |
|
