| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] | 407839 |
|
| 2 | [prep] [det] [noun sg] | 231499 |
|
| 3 | [det] a [noun sg] | 17410 |
|
| 4 | [prep] [det] a | 8539 |
|
