| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] | 465207 |
|
| 2 | [prep] a [adv] | 25600 |
|
| 3 | [prep] [adv] [noun sg] | 3951 |
|
| 4 | a [adv] [noun sg] | 584 |
|
