| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [prep] [adj] periods of time | 36 |
|
| 2 | [noun sg] [prep] [adj] periods of time | 30 |
|
| 3 | [noun sg] for [adj] periods of time | 23 |
|
| 4 | [noun sg] for [adj] periods of time | 23 |
|
| 5 | [noun sg] [prep] long periods of time | 14 |
|
| 6 | [noun sg] [prep] long periods of time | 12 |
|
| 7 | [noun sg] over [adj] periods of time | 8 |
|
| 8 | [noun sg] over [adj] periods of time | 8 |
|
| 9 | [noun sg] [prep] short periods of time | 5 |
|
