| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] period of | 544 |
|
| 2 | [prep] a continuous [noun] of | 71 |
|
| 3 | [prep] a continuous [noun sg] of | 70 |
|
| 4 | [prep] a continuous period of | 19 |
|
| 5 | [prep] a continuous period [prep] | 19 |
|
| 6 | [prep] [art] continuous period of | 19 |
|
| 7 | [prep] a continuous period of | 19 |
|
| 8 | [prep] [art] continuous period of | 19 |
|
| 9 | [prep] a continuous period [prep] | 19 |
|
| 10 | [prep] a continuous period of | 19 |
|
