| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] | 407844 |
|
| 2 | [prep] first [noun sg] | 2545 |
|
| 3 | a first [noun sg] | 1440 |
|
| 4 | [prep] a first | 695 |
|
