| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] as a [noun] of | 2990 |
|
| 2 | [vb pp] as a [noun sg] of | 2811 |
|
| 3 | [vb pp] [prep] a period of | 215 |
|
| 4 | [vb pp] as [art] period of | 17 |
|
| 5 | [verb] as a period of | 17 |
|
| 6 | [vb pp] as a period [prep] | 16 |
|
| 7 | [vb pp] as a period of | 16 |
|
