| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] a long [noun] of | 53 |
|
| 2 | [adv] a long [noun sg] of | 52 |
|
| 3 | [adv] a [adj] period of | 42 |
|
| 4 | [adv] [art] long period of | 13 |
|
| 5 | [adv] a long period [prep] | 13 |
|
| 6 | [adv] [art] long period of | 13 |
|
| 7 | [adv] a long period [prep] | 13 |
|
| 8 | [adv] a long period of | 12 |
|
| 9 | [adv] a long period of | 12 |
|
| 10 | [adv] a long period of | 12 |
|
