Sure! Here's a an example crontab line that runs a command every 3 days at midnight:
```
0 0 */3 * * <command>
```

Here's another example runs at noon on the first day of each month, skipping April through August.
```
# '-' specifies an inlcusive range of times, while ',' specifies joining two ranges or numbers
0 12 0 0-2,9-11 * <command>

# Can also be written as
0 12 0 jan-mar,sep-dec * <command>
```

A simple way to run a command once a week one month and twice a week another month is to add two entries for a command:
```
# Run at noon on Sunday in January...
0 12 * jan sun <command>

# ... and at noon on Sunday and Wednesday in February
0 12 * feb sun,wed <command>
```
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence