| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [verb] long periods | 15 |
|
| 2 | have [vb pp] long periods | 11 |
|
| 3 | have spent long [noun] | 11 |
|
| 4 | have spent long [noun pl] | 10 |
|
| 5 | have spend long periods | 10 |
|
| 6 | have spent [adj] periods | 7 |
|
| 7 | have spent long period | 6 |
|
| 8 | [verb] spent long periods | 6 |
|
