| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [det] a long period | 10 |
|
| 2 | [prep] [adj] a long period | 10 |
|
| 3 | [prep] such a long period | 10 |
|
| 4 | [prep] such a long period | 10 |
|
| 5 | [prep] quite a long period | 6 |
|
| 6 | [prep] quite a long period | 6 |
|
| 7 | [prep] [adv] a long period | 6 |
|
| 8 | [prep] [adv] a long period | 6 |
|
| 9 | [noun] [prep] a long period | 177 |
|
| 10 | [noun sg] [prep] a long period | 129 |
|
| 11 | [verb] [prep] a long period | 91 |
|
| 12 | [vb pp] [prep] a long period | 67 |
|
| 13 | [noun pl] [prep] a long period | 42 |
|
| 14 | [adv] [prep] a long period | 36 |
|
| 15 | [adv] [prep] a long period | 25 |
|
| 16 | [conj] [prep] a long period | 17 |
|
| 17 | [adj] [prep] a long period | 17 |
|
| 18 | [adj] [prep] a long period | 14 |
|
| 19 | [coord] [prep] a long period | 13 |
|
| 20 | [adv prt] [prep] a long period | 11 |
|
| 21 | [pron] [prep] a long period | 10 |
|
| 22 | [to-vb] [prep] a long period | 7 |
|
| 23 | [pers pn] [prep] a long period | 7 |
|
| 24 | or [prep] a long period | 6 |
|
| 25 | and [prep] a long period | 6 |
|
| 26 | and [prep] a long period | 6 |
|
| 27 | or [prep] a long period | 6 |
|
| 28 | on [prep] a long period | 5 |
|
| 29 | [v-ing] [prep] a long period | 5 |
|
| 30 | developed [prep] a long period | 5 |
|
