| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [prep] an [adj] period | 57 |
|
| 2 | [noun sg] for an [adj] period | 39 |
|
| 3 | [noun sg] [prep] an indefinite period | 14 |
|
| 4 | [noun sg] [prep] an indefinite period | 14 |
|
| 5 | [noun sg] [prep] an extended period | 11 |
|
| 6 | [noun sg] [prep] an extended period | 11 |
|
| 7 | [noun sg] over an [adj] period | 9 |
|
| 8 | [noun sg] [prep] an early period | 8 |
|
| 9 | [noun sg] [prep] an agreed period | 7 |
|
| 10 | [noun sg] [prep] an agreed period | 7 |
|
| 11 | [noun sg] [prep] an [adj -er] period | 7 |
|
| 12 | [noun sg] [prep] an earlier period | 7 |
|
| 13 | [noun sg] [prep] an initial period | 5 |
|
| 14 | [noun sg] [prep] an initial period | 5 |
|
| 15 | [noun sg] [prep] an experimental period | 5 |
|
| 16 | [noun sg] [prep] an experimental period | 5 |
|
