| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [noun] [prep] a [adj] period | 17 |
|
| 2 | [to-vb] [noun] [prep] a [adj] period | 15 |
|
| 3 | [to-vb] [noun] [prep] a long [noun sg] | 13 |
|
| 4 | [to-vb] [noun] [prep] a long [noun] | 13 |
|
| 5 | [verb] [noun] [prep] a long period | 6 |
|
| 6 | [to-vb] [noun] [prep] a long period | 6 |
|
| 7 | [to-vb] [noun] [prep] a long period | 5 |
|
| 8 | [to-vb] [noun] [prep] [art] long period | 5 |
|
| 9 | [to-vb] [noun] [prep] a long period | 5 |
|
