| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [prep] the [noun] in | 5150 |
|
| 2 | [vb pp] [prep] the period [prep] | 112 |
|
| 3 | [vb pp] [prep] the period [prep] | 112 |
|
| 4 | [vb pp] [prep] [art] period in | 20 |
|
| 5 | [verb] [prep] the period in | 13 |
|
| 6 | [vb pp] [prep] the period in | 12 |
|
