| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [noun] [prep] a [noun] | 2139 |
|
| 2 | [v-ing] [noun] [prep] a [noun sg] | 2007 |
|
| 3 | [verb] [noun] [prep] a period | 50 |
|
| 4 | [v-ing] [noun] [prep] [art] period | 24 |
|
| 5 | [v-ing] [noun] [prep] [art] period | 24 |
|
| 6 | [v-ing] [noun] [prep] a period | 9 |
|
| 7 | [v-ing] [noun] [prep] a period | 9 |
|
| 8 | [v-ing] [noun] [prep] a period | 9 |
|
