| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] when [art] [noun sg] | 451 |
|
| 2 | 1991 when [art] [noun] | 16 |
|
| 3 | 1991 [adv] [art] [noun sg] | 14 |
|
| 4 | 1991 when [art] [noun sg] | 10 |
|
