| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] [noun sg] period [prep] [art] | 23 |
|
| 2 | a [adj] [noun] period [prep] [art] | 23 |
|
| 3 | a [adj] [noun] period [prep] the | 16 |
|
| 4 | a [num] [noun] period [prep] [art] | 12 |
|
| 5 | a [adj] [noun] period [prep] [art] | 10 |
|
| 6 | a [adj] year period [prep] [art] | 8 |
|
| 7 | a [adj] year period [prep] [art] | 8 |
|
| 8 | a [adj] [noun] period in [art] | 6 |
|
| 9 | a [adj] [noun] period in [art] | 6 |
|
| 10 | a [adj] [noun] period at [art] | 5 |
|
| 11 | a [adj] [noun] period at [art] | 5 |
|
