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