| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [prep] a period of time | 18 |
|
| 2 | [coord] [prep] a period of time | 13 |
|
| 3 | and [prep] a period of [noun] | 13 |
|
| 4 | and [prep] a [noun sg] of time | 10 |
|
| 5 | and [prep] a [noun] of time | 10 |
|
| 6 | and [prep] a period of time | 9 |
|
| 7 | and [prep] a period [prep] time | 9 |
|
| 8 | and [prep] a period [prep] time | 9 |
|
| 9 | and [prep] a period of time | 9 |
|
| 10 | and [prep] [art] period of time | 9 |
|
| 11 | and [prep] a period of time | 9 |
|
