| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] in | 15849 |
|
| 2 | [prep] a [noun sg] in | 15738 |
|
| 3 | [prep] a period [prep] | 1753 |
|
| 4 | [prep] a period [prep] | 1753 |
|
| 5 | [prep] [art] period in | 145 |
|
| 6 | [prep] [art] period in | 145 |
|
| 7 | [prep] a period in | 72 |
|
| 8 | [prep] a period in | 72 |
|
| 9 | [prep] a period in | 72 |
|
