| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [vb pp] [prep] [art] [adj] period | 53 |
|
| 2 | have [verb] [prep] a [adj] period | 27 |
|
| 3 | have [verb] [prep] the [adj] period | 25 |
|
| 4 | had [verb] [prep] [art] [adj] period | 17 |
|
| 5 | has [verb] [prep] [art] [adj] period | 17 |
|
| 6 | have [verb] [prep] [art] long period | 15 |
|
| 7 | have [verb] over [art] [adj] period | 15 |
|
| 8 | have [verb] in [art] [adj] period | 12 |
|
| 9 | have [verb] [prep] [art] post-war period | 11 |
|
| 10 | have [verb] [prep] [art] [adj] period | 11 |
|
| 11 | have [verb] during [art] [adj] period | 8 |
|
| 12 | have occur [prep] [art] [adj] period | 5 |
|
| 13 | have occurred [prep] [art] [adj] period | 5 |
|
