| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a period of | 652 |
|
| 2 | [noun sg] [prep] a period of | 424 |
|
| 3 | [verb] [prep] a period of | 372 |
|
| 4 | [vb pp] [prep] a period of | 215 |
|
| 5 | [noun pl] [prep] a period of | 183 |
|
| 6 | [adv] [prep] a period of | 129 |
|
| 7 | [adv] [prep] a period of | 87 |
|
| 8 | [adj] [prep] a period of | 70 |
|
| 9 | [conj] [prep] a period of | 51 |
|
| 10 | [vb past] [prep] a period of | 43 |
|
| 11 | [adv prt] [prep] a period of | 41 |
|
| 12 | [adj] [prep] a period of | 40 |
|
| 13 | [v-ing] [prep] a period of | 37 |
|
| 14 | go [prep] a period of | 34 |
|
| 15 | [coord] [prep] a period of | 32 |
|
| 16 | [noun prp] [prep] a period of | 31 |
|
| 17 | and [prep] a period of | 23 |
|
| 18 | and [prep] a period of | 23 |
|
| 19 | [vb infin] [prep] a period of | 23 |
|
| 20 | [be] [prep] a period of | 23 |
|
| 21 | be [prep] a period of | 23 |
|
| 22 | [pron] [prep] a period of | 20 |
|
| 23 | [vb -s] [prep] a period of | 19 |
|
| 24 | [to-vb] [prep] a period of | 18 |
|
| 25 | [vb base] [prep] a period of | 17 |
|
| 26 | [num] [prep] a period of | 16 |
|
| 27 | [that] [prep] a period of | 16 |
|
| 28 | that [prep] a period of | 16 |
|
| 29 | follow [prep] a period of | 16 |
|
| 30 | that [prep] a period of | 16 |
|
