| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [prep] a long | 283 |
|
| 2 | [pron] [prep] a while | 261 |
|
| 3 | [prep] a long while | 120 |
|
| 4 | [pron] a long while | 12 |
|
