| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [vb mod] vary from time to | 7 |
|
| 2 | [vb mod] vary from time to time | 11 |
|
| 3 | [vb mod] vary from time to time | 11 |
|
| 4 | [vb mod] vary from time to [noun] | 11 |
|
| 5 | [vb mod] vary from time to [noun sg] | 11 |
|
