| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] period [prep] up to | 28 |
|
| 2 | [art] period [prep] up to | 28 |
|
| 3 | a period [prep] up to | 27 |
|
| 4 | a period [prep] up to | 27 |
|
| 5 | [prep] period [prep] up to | 13 |
|
| 6 | [prep] period [prep] up to | 13 |
|
| 7 | for period [prep] up to | 11 |
|
| 8 | for period [prep] up to | 11 |
|
| 9 | [noun] period [prep] up to | 5 |
|
| 10 | [noun sg] period [prep] up to | 5 |
|
| 11 | period [prep] up to [adj] | 45 |
|
| 12 | period [prep] up to [num] | 44 |
|
| 13 | period [prep] up to three | 6 |
|
| 14 | period [prep] up to three | 6 |
|
| 15 | period [prep] up to one | 5 |
|
| 16 | period [prep] up to one | 5 |
|
