| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adv] a [noun] | 3372 |
|
| 2 | [prep] a [noun] [modal v] | 3034 |
|
| 3 | [adv] a [noun] [modal v] | 1247 |
|
| 4 | [prep] [adv] [noun] [modal v] | 431 |
|
