| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a very [adj] period of | 33 |
|
| 2 | a very long [noun] of | 23 |
|
| 3 | a very long [noun sg] of | 20 |
|
| 4 | a [adv] long period of | 17 |
|
| 5 | a very long period [prep] | 8 |
|
| 6 | [art] very long period of | 8 |
|
| 7 | [art] very long period of | 8 |
|
| 8 | a very long period [prep] | 8 |
|
| 9 | a very long period of | 7 |
|
| 10 | a very long period of | 7 |
|
| 11 | a very long period of | 7 |
|
