| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] period [prep] [noun sg] | 409 |
|
| 2 | [prep] a [adj] period [prep] [noun sg] | 388 |
|
| 3 | [prep] a short [noun] [prep] [noun sg] | 153 |
|
| 4 | [prep] a short [noun sg] [prep] [noun sg] | 151 |
|
| 5 | [prep] a short period [prep] [noun] | 62 |
|
| 6 | [prep] a short period [prep] [noun sg] | 59 |
|
| 7 | [prep] [art] short period [prep] [noun sg] | 56 |
|
| 8 | [prep] [art] short period [prep] [noun sg] | 56 |
|
| 9 | [prep] a short period [prep] [noun sg] | 53 |
|
| 10 | [prep] a short period [prep] [noun sg] | 53 |
|
| 11 | [prep] a short period [prep] [noun sg] | 53 |
|
