| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a long period of [noun] | 127 |
|
| 2 | [prep] a long period of [noun] | 127 |
|
| 3 | over a long period of [noun] | 81 |
|
| 4 | over a long period of [noun] | 81 |
|
| 5 | for a long period of [noun] | 20 |
|
| 6 | for a long period of [noun] | 20 |
|
| 7 | [adv] a long period of [noun] | 11 |
|
| 8 | [verb] a long period of [noun] | 11 |
|
| 9 | after a long period of [noun] | 10 |
|
| 10 | after a long period of [noun] | 10 |
|
| 11 | over a long period of [noun] | 8 |
|
| 12 | [adv prt] a long period of [noun] | 8 |
|
| 13 | over a long period of [noun] | 8 |
|
| 14 | [be] a long period of [noun] | 6 |
|
| 15 | be a long period of [noun] | 6 |
|
| 16 | [conj] a long period of [noun] | 5 |
|
| 17 | a [adv] long period of [noun] | 15 |
|
| 18 | a [adv] long period of [noun] | 15 |
|
| 19 | a very long period of [noun] | 7 |
|
| 20 | a very long period of [noun] | 7 |
|
| 21 | a long period of [adj] [noun] | 23 |
|
| 22 | a long period of [adj] [noun] | 22 |
|
| 23 | a long period of [noun] [noun] | 6 |
|
| 24 | a long period of [noun sg] [noun] | 6 |
|
| 25 | a long period of [noun] [conj] | 21 |
|
| 26 | a long period of [noun] [coord] | 17 |
|
| 27 | a long period of [noun] and | 15 |
|
| 28 | a long period of [noun] and | 15 |
|
| 29 | a long period of [noun] [prep] | 14 |
|
| 30 | a long period of [noun] [prep] | 14 |
|
