| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a long period [prep] | 179 |
|
| 2 | [prep] a long period [prep] | 179 |
|
| 3 | [prep] a long period of | 152 |
|
| 4 | [prep] a long period of | 152 |
|
| 5 | [prep] a long period [conj] | 28 |
|
| 6 | [prep] a long period [coord] | 14 |
|
| 7 | [prep] a long period and | 13 |
|
| 8 | [prep] a long period and | 13 |
|
| 9 | [prep] a long period than | 12 |
|
| 10 | [prep] a long period [subord] | 12 |
|
| 11 | [prep] a long period than | 12 |
|
| 12 | [prep] a long period [verb] | 11 |
|
| 13 | [prep] a long period [adv] | 9 |
|
| 14 | [prep] a long period [adv] | 9 |
|
| 15 | [prep] a long period [vb mod] | 6 |
|
| 16 | [prep] a long period [modal v] | 6 |
|
| 17 | [prep] a long period in | 5 |
|
| 18 | [prep] a long period during | 5 |
|
| 19 | [prep] a long period in | 5 |
|
| 20 | [prep] a long period during | 5 |
|
| 21 | [noun] [prep] a long period | 177 |
|
| 22 | [noun sg] [prep] a long period | 129 |
|
| 23 | [verb] [prep] a long period | 91 |
|
| 24 | [vb pp] [prep] a long period | 67 |
|
| 25 | [noun pl] [prep] a long period | 42 |
|
| 26 | [adv] [prep] a long period | 36 |
|
| 27 | [adv] [prep] a long period | 25 |
|
| 28 | [conj] [prep] a long period | 17 |
|
| 29 | [adj] [prep] a long period | 17 |
|
| 30 | [adj] [prep] a long period | 14 |
|
