| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a very long time | 170 |
|
| 2 | [adv] [prep] a long time | 111 |
|
| 3 | [adv] [prep] a very long | 14 |
|
| 4 | [adv] a very long time | 6 |
|
