| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [adv] in a while | 9 |
|
| 2 | [pron] [adv] in a while | 9 |
|
| 3 | [pron] once in a while | 8 |
|
| 4 | [pron] once in a while | 8 |
|
