| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a period [prep] [noun sg] | 476 |
|
| 2 | [prep] a period of [noun sg] | 452 |
|
| 3 | [prep] a period [prep] time | 239 |
|
| 4 | over a period [prep] [noun sg] | 186 |
|
| 5 | over a period [prep] [noun sg] | 186 |
|
| 6 | after a period [prep] [noun sg] | 61 |
|
| 7 | after a period [prep] [noun sg] | 61 |
|
| 8 | for a period [prep] [noun sg] | 59 |
|
| 9 | for a period [prep] [noun sg] | 59 |
|
| 10 | in a period [prep] [noun sg] | 38 |
|
| 11 | in a period [prep] [noun sg] | 38 |
|
| 12 | during a period [prep] [noun sg] | 22 |
|
| 13 | during a period [prep] [noun sg] | 22 |
|
| 14 | of a period [prep] [noun sg] | 17 |
|
| 15 | to a period [prep] [noun sg] | 17 |
|
| 16 | to a period [prep] [noun sg] | 17 |
|
| 17 | of a period [prep] [noun sg] | 17 |
|
| 18 | as a period [prep] [noun sg] | 16 |
|
| 19 | by a period [prep] [noun sg] | 16 |
|
| 20 | by a period [prep] [noun sg] | 16 |
|
| 21 | as a period [prep] [noun sg] | 16 |
|
| 22 | [prep] a period in [noun sg] | 13 |
|
| 23 | through a period [prep] [noun sg] | 12 |
|
| 24 | through a period [prep] [noun sg] | 12 |
|
| 25 | with a period [prep] [noun sg] | 10 |
|
| 26 | with a period [prep] [noun sg] | 10 |
|
| 27 | [prep] a period [prep] transition | 10 |
|
| 28 | [prep] a period [prep] inflation | 9 |
|
| 29 | from a period [prep] [noun sg] | 8 |
|
| 30 | from a period [prep] [noun sg] | 8 |
|
