| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if they did [verb] [art] | 7 |
|
| 2 | if they did [vb infin] [art] | 7 |
|
| 3 | if they did [verb] [art] | 7 |
|
| 4 | if they did [verb] [art] | 7 |
|
