| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] when the [noun sg] | 178 |
|
| 2 | [prep] 1989 when [art] [noun sg] | 13 |
|
| 3 | [prep] 1989 when the [noun] | 11 |
|
| 4 | [prep] 1989 when the [noun sg] | 10 |
|
| 5 | [prep] 1989 [adv] the [noun sg] | 10 |
|
