| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] a [noun sg] [art] | 91 |
|
| 2 | [v-ing] on [art] [noun sg] [art] | 50 |
|
| 3 | [verb] on a [noun sg] [art] | 31 |
|
| 4 | [v-ing] on a [noun] [art] | 5 |
|
