| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] period [prep] | 362 |
|
| 2 | [prep] [det] period [prep] | 345 |
|
| 3 | [prep] [adj] period of | 208 |
|
| 4 | [prep] this period [prep] | 172 |
|
| 5 | [prep] this period [prep] | 172 |
|
| 6 | in [adj] period [prep] | 86 |
|
| 7 | during [adj] period [prep] | 86 |
|
| 8 | during [adj] period [prep] | 86 |
|
| 9 | in [adj] period [prep] | 86 |
|
| 10 | [prep] any period [prep] | 79 |
|
| 11 | [prep] any period [prep] | 79 |
|
| 12 | [prep] that period [prep] | 66 |
|
| 13 | [prep] that period [prep] | 66 |
|
| 14 | [prep] [adj] period in | 51 |
|
| 15 | of [adj] period [prep] | 41 |
|
| 16 | of [adj] period [prep] | 41 |
|
| 17 | for [adj] period [prep] | 40 |
|
| 18 | for [adj] period [prep] | 40 |
|
| 19 | at [adj] period [prep] | 33 |
|
| 20 | at [adj] period [prep] | 33 |
|
| 21 | over [adj] period [prep] | 17 |
|
| 22 | over [adj] period [prep] | 17 |
|
| 23 | from [adj] period [prep] | 16 |
|
| 24 | from [adj] period [prep] | 16 |
|
| 25 | [prep] [num] period [prep] | 15 |
|
| 26 | [prep] one period [prep] | 14 |
|
| 27 | [prep] one period [prep] | 14 |
|
| 28 | to [adj] period [prep] | 14 |
|
| 29 | to [adj] period [prep] | 14 |
|
| 30 | [prep] some period [prep] | 12 |
|
