| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] when [art] [noun sg] | 234 |
|
| 2 | [prep] 1990 when [art] [noun] | 11 |
|
| 3 | [prep] 1990 [adv] [art] [noun sg] | 10 |
|
| 4 | [prep] 1990 when [art] [noun sg] | 8 |
|
