| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | 1991 when [art] [noun] | 16 |
|
| 2 | 1991 when [art] [noun] | 16 |
|
| 3 | 1991 when the [noun] | 12 |
|
| 4 | 1991 when the [noun] | 12 |
|
| 5 | 1991 when [art] [noun sg] | 10 |
|
