| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] a [adv] long time | 20 |
|
| 2 | [vb infin] a very long time | 17 |
|
| 3 | [vb infin] a very long time | 17 |
|
| 4 | take a [adv] long time | 14 |
|
