| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | very [adj] period of | 40 |
|
| 2 | very short period of | 19 |
|
| 3 | very short period of | 19 |
|
| 4 | very long period of | 9 |
|
| 5 | very long period of | 9 |
|
