| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [verb] [art] period of | 24 |
|
| 2 | have [verb] [art] period of | 24 |
|
| 3 | have [vb pp] [art] period of | 22 |
|
| 4 | have [verb] a period of | 21 |
|
| 5 | have [verb] a period of | 21 |
|
| 6 | has [verb] [art] period of | 10 |
|
| 7 | have enter [art] period of | 5 |
|
| 8 | had [verb] [art] period of | 5 |
|
| 9 | have [verb] [art] period of | 5 |
|
| 10 | have entered [art] period of | 5 |
|
