| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [verb] [prep] a | 1958 |
|
| 2 | when they [verb] [prep] | 1250 |
|
| 3 | when [verb] [prep] a | 590 |
|
| 4 | when they [verb] a | 254 |
|
