| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [vb -s] [prep] a [noun] | 3114 |
|
| 2 | [noun] [vb -s] [prep] a [noun sg] | 2946 |
|
| 3 | [noun] [verb] [prep] a period | 98 |
|
| 4 | [noun] [vb -s] [prep] [art] period | 37 |
|
| 5 | [noun] [vb -s] [prep] [art] period | 37 |
|
| 6 | [noun] [vb -s] [prep] a period | 21 |
|
| 7 | [noun] [vb -s] [prep] a period | 21 |
|
