| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] | 407844 |
|
| 2 | [prep] a [det] | 8648 |
|
| 3 | [prep] [noun sg] [det] | 6616 |
|
| 4 | a [noun sg] [det] | 4323 |
|
