| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] from time to time | 80 |
|
| 2 | [vb mod] from time to time | 80 |
|
| 3 | may from time to time | 52 |
|
| 4 | shall from time to time | 12 |
|
| 5 | will from time to time | 9 |
|
