| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a long time | 1752 |
|
| 2 | [adv] [prep] a time | 382 |
|
| 3 | [adv] [prep] a long | 263 |
|
| 4 | [adv] a long time | 183 |
|
