| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a very long [noun] | 212 |
|
| 2 | [prep] a very long [noun sg] | 211 |
|
| 3 | [prep] a very [adj] period | 52 |
|
| 4 | [prep] a [adv] long period | 44 |
|
| 5 | [prep] a [adv] long period | 44 |
|
| 6 | [prep] [art] very long period | 8 |
|
| 7 | [prep] a very long period | 8 |
|
| 8 | [prep] [art] very long period | 8 |
|
| 9 | [prep] a very long period | 8 |
|
| 10 | [prep] a very long period | 8 |
|
