| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] 1986 when [pers pn] | 15 |
|
| 2 | [prep] 1986 when [pers pn] | 15 |
|
| 3 | in 1986 when [pers pn] | 12 |
|
| 4 | in 1986 when [pers pn] | 12 |
|
| 5 | 1986 when [pers pn] [verb] | 12 |
|
| 6 | 1986 when [pers pn] [vb past] | 12 |
|
