| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [prep] a period [prep] | 232 |
|
| 2 | [vb pp] [prep] a period [prep] | 232 |
|
| 3 | [vb pp] over a [noun] [prep] | 172 |
|
| 4 | [vb pp] over [art] period [prep] | 80 |
|
| 5 | [vb pp] over [art] period [prep] | 80 |
|
| 6 | [verb] over a period [prep] | 76 |
|
| 7 | [vb pp] over a period [prep] | 71 |
|
| 8 | [vb pp] over a period [prep] | 71 |
|
| 9 | [vb pp] over a period [prep] | 71 |
|
