| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a first [noun] | 586 |
|
| 2 | [prep] a first [noun sg] | 583 |
|
| 3 | [prep] a [adj] stage | 502 |
|
| 4 | [prep] [art] first stage | 161 |
|
| 5 | [prep] [art] first stage | 161 |
|
| 6 | [prep] a first stage | 17 |
|
| 7 | [prep] a first stage | 17 |
|
