| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [conj] a | 737 |
|
| 2 | [prep] [subord] a | 509 |
|
| 3 | [prep] when [art] | 42 |
|
| 4 | [prep] when [art] | 42 |
|
| 5 | [prep] when a | 8 |
|
| 6 | [prep] when a | 6 |
|
| 7 | [prep] when a | 6 |
|
