| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a long time | 1727 |
|
| 2 | [vb base] [prep] a long | 54 |
|
| 3 | [vb base] a long time | 52 |
|
| 4 | [vb base] [prep] a time | 48 |
|
