| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [vb pp] [prep] a [adj] | 660 |
|
| 2 | [vb pp] [prep] a [adj] period | 266 |
|
| 3 | has [vb pp] [prep] a period | 10 |
|
| 4 | has [vb pp] [prep] [adj] period | 6 |
|
