| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of the period | 854 |
|
| 2 | during the period | 682 |
|
| 3 | in the period | 672 |
|
| 4 | for the period | 422 |
|
| 5 | over the period | 309 |
|
| 6 | throughout the period | 119 |
|
| 7 | to the period | 98 |
|
| 8 | from the period | 75 |
|
| 9 | within the period | 50 |
|
| 10 | on the period | 37 |
|
| 11 | with the period | 29 |
|
| 12 | through the period | 27 |
|
| 13 | about the period | 16 |
|
| 14 | at the period | 14 |
|
| 15 | as the period | 13 |
|
| 16 | beyond the period | 11 |
|
| 17 | after the period | 10 |
|
| 18 | into the period | 5 |
|
| 19 | before the period | 5 |
|
