| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [prep] a while | 76 |
|
| 2 | it [prep] a while | 76 |
|
| 3 | it for a while | 64 |
|
| 4 | it for a while | 64 |
|
| 5 | it after a while | 9 |
|
| 6 | it after a while | 9 |
|
