| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] use [subord] [v-ing] | 15 |
|
| 2 | [noun sg] use when [verb] | 14 |
|
| 3 | [noun sg] used [subord] [verb] | 11 |
|
| 4 | [noun sg] to use [subord] [verb] | 7 |
|
