| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | use when [v-ing] [art] | 20 |
|
| 2 | use when [verb] [art] | 20 |
|
| 3 | use when [verb] the | 15 |
|
| 4 | use when [verb] the | 15 |
|
| 5 | used when [verb] [art] | 15 |
|
| 6 | use when [verb] a | 5 |
|
| 7 | use when [verb] a | 5 |
|
