| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] a [noun] of | 3869 |
|
| 2 | [subord] a [noun sg] of | 3716 |
|
| 3 | [conj] a period of | 82 |
|
| 4 | [subord] [art] period of | 78 |
|
| 5 | [subord] [art] period of | 78 |
|
| 6 | [subord] a period [prep] | 37 |
|
| 7 | [subord] a period of | 35 |
|
| 8 | [subord] a period of | 35 |
|
