| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [prep] a period | 269 |
|
| 2 | [vb pp] over a period | 78 |
|
| 3 | [vb pp] for a period | 54 |
|
| 4 | [vb pp] by a period | 33 |
|
| 5 | [vb pp] as a period | 20 |
|
| 6 | followed [prep] a period | 18 |
|
| 7 | [vb pp] within a period | 17 |
|
| 8 | [vb pp] in a period | 14 |
|
| 9 | [vb pp] during a period | 13 |
|
| 10 | [vb pp] to a period | 10 |
|
| 11 | [vb pp] through a period | 8 |
|
| 12 | made [prep] a period | 7 |
|
| 13 | [vb pp] with a period | 7 |
|
| 14 | gone [prep] a period | 6 |
|
| 15 | [vb pp] after a period | 5 |
|
| 16 | described [prep] a period | 5 |
|
| 17 | achieved [prep] a period | 5 |
|
| 18 | spread [prep] a period | 5 |
|
| 19 | held [prep] a period | 5 |
|
