| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when the [noun sg] | 3540 |
|
| 2 | 1986 the [noun sg] | 76 |
|
| 3 | 1986 when the | 14 |
|
| 4 | 1986 when [noun sg] | 5 |
|
