| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] a long time on | 6 |
|
| 2 | [verb] [prep] [art] long time on | 6 |
|
| 3 | [verb] [prep] a long time on | 6 |
|
| 4 | [verb] for [art] long time on | 6 |
|
