| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] a [adj] [noun] of | 5129 |
|
| 2 | [verb] a [adj] period of | 131 |
|
| 3 | [to-vb] [art] [adj] period of | 25 |
|
| 4 | [to-vb] a [adj] period [prep] | 19 |
|
| 5 | [to-vb] a [adj] period [prep] | 19 |
|
| 6 | [to-vb] a [adj] period of | 19 |
|
| 7 | [to-vb] a [adj] period of | 14 |
|
