| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [vb pp] [prep] [art] period | 18 |
|
| 2 | has [verb] [prep] a period | 11 |
|
| 3 | has [verb] over [art] period | 9 |
|
| 4 | has [verb] [prep] the period | 8 |
|
