| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [vb pp] [prep] the [adj] period | 25 |
|
| 2 | have [verb] in the [adj] period | 11 |
|
| 3 | have [verb] [prep] the post-war period | 11 |
|
| 4 | has [verb] [prep] the [adj] period | 10 |
|
| 5 | had [verb] [prep] the [adj] period | 8 |
|
| 6 | have [verb] during the [adj] period | 6 |
|
| 7 | have [verb] [prep] the [adj] period | 5 |
|
