| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [vb pp] [adj] periods | 16 |
|
| 2 | have [vb pp] [adj] period | 12 |
|
| 3 | have [vb pp] long period | 11 |
|
| 4 | have [vb pp] [adj] period | 11 |
|
| 5 | have [vb pp] long period | 10 |
|
| 6 | have [vb pp] [det] period | 7 |
|
| 7 | have spent [adj] period | 7 |
|
| 8 | have [vb pp] [adj] period | 6 |
|
| 9 | has [vb pp] [adj] period | 6 |
|
