| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [prep] [noun] [noun sg] | 35 |
|
| 2 | a [adj] period [prep] [noun] [noun sg] | 34 |
|
| 3 | a [adj] period [prep] [noun] [noun sg] | 31 |
|
| 4 | a [adj] period [prep] [noun sg] [noun sg] | 29 |
|
| 5 | a [adj] period of [noun] [noun sg] | 28 |
|
| 6 | a [adj] period of [noun] [noun sg] | 28 |
|
| 7 | a brief period [prep] [noun] [noun sg] | 7 |
|
| 8 | a brief period [prep] [noun] [noun sg] | 7 |
|
| 9 | a long period [prep] [noun] [noun sg] | 5 |
|
| 10 | a [adj] period [prep] [noun prp] [noun sg] | 5 |
|
