| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [verb] [adv] a long | 71 |
|
| 2 | [verb] [adv] a long period | 31 |
|
| 3 | [noun] [verb] [adv] a period | 27 |
|
| 4 | [noun] [verb] a long period | 8 |
|
