| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [vb infin] from time to time | 7 |
|
| 2 | [verb] [vb infin] from time to [noun sg] | 7 |
|
| 3 | do [vb infin] from time to [noun sg] | 5 |
|
