| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a while it [verb] [conj] | 6 |
|
| 2 | for a while it [verb] [conj] | 6 |
|
| 3 | [prep] a while it [verb] [conj] | 6 |
|
| 4 | for a while it [verb] [conj] | 6 |
|
