| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [verb] long periods | 15 |
|
| 2 | have [verb] long period | 14 |
|
| 3 | have [vb pp] long period | 11 |
|
| 4 | have spend long period | 10 |
|
| 5 | have [verb] long period | 7 |
|
| 6 | have spent long period | 6 |
|
