| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [adj] period [prep] | 250 |
|
| 2 | [adv] [adj] period [prep] | 214 |
|
| 3 | [adv] lengthy [noun] [prep] | 19 |
|
| 4 | [adv] lengthy [noun sg] [prep] | 15 |
|
| 5 | [adv] lengthy period [prep] | 5 |
|
| 6 | [adv] lengthy period [prep] | 5 |
|
