| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] period [prep] | 370 |
|
| 2 | [prep] period [prep] | 370 |
|
| 3 | [prep] periods [prep] | 341 |
|
| 4 | [prep] period of | 322 |
|
| 5 | [prep] period of | 322 |
|
| 6 | during period [prep] | 77 |
|
| 7 | during period [prep] | 77 |
|
| 8 | in period [prep] | 63 |
|
| 9 | in period [prep] | 63 |
|
| 10 | for period [prep] | 55 |
|
| 11 | for period [prep] | 55 |
|
| 12 | of period [prep] | 30 |
|
| 13 | of period [prep] | 30 |
|
| 14 | [prep] period [prep] | 29 |
|
| 15 | to period [prep] | 27 |
|
| 16 | to period [prep] | 27 |
|
| 17 | with period [prep] | 25 |
|
| 18 | with period [prep] | 25 |
|
| 19 | by period [prep] | 16 |
|
| 20 | by period [prep] | 16 |
|
| 21 | over period [prep] | 13 |
|
| 22 | over period [prep] | 13 |
|
| 23 | [prep] period in | 12 |
|
| 24 | [prep] period in | 12 |
|
| 25 | from period [prep] | 9 |
|
| 26 | between period [prep] | 9 |
|
| 27 | from period [prep] | 9 |
|
| 28 | between period [prep] | 9 |
|
| 29 | at period [prep] | 8 |
|
| 30 | at period [prep] | 8 |
|
