| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] a long [noun] | 737 |
|
| 2 | [adv] a long [noun sg] | 735 |
|
| 3 | [adv] a [adj] period | 138 |
|
| 4 | [adv] [art] long period | 45 |
|
| 5 | [adv] [art] long period | 45 |
|
| 6 | [adv] a long period | 43 |
|
| 7 | [adv] a long period | 43 |
|
