| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] use when a | 5 |
|
| 2 | be use when a | 5 |
|
| 3 | use when [verb] a | 5 |
|
| 4 | use when [v-ing] a | 5 |
|
| 5 | use when a [noun] | 7 |
|
| 6 | use when a [noun sg] | 6 |
|
