| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] [conj] [verb] | 7904 |
|
| 2 | [prep] a [noun] [conj] [verb] | 7904 |
|
| 3 | on [art] [noun] [conj] [verb] | 3321 |
|
| 4 | on a [noun] [conj] [verb] | 532 |
|
