| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb base] [prep] a | 4206 |
|
| 2 | [pron] [vb base] a certain | 97 |
|
| 3 | [pron] [prep] a certain | 97 |
|
| 4 | [pron] [vb base] [prep] certain | 63 |
|
| 5 | [vb base] [prep] a certain | 53 |
|
