Default custom charsets?

[kefir]

I'm running a brute force attack, and oclHashCat shows me that the mask is:

?1?2?2?2?2?2?3?3

I'm trying to figure out what this means, exactly. ?1 is custom charset number one, and the same goes for ?2 and ?3. I haven't specified any custom charset. It seems that there's a default custom charset, although that sounds like an oxymoron. What are the default custom charsets?

[Xanadrel]

https://hashcat.net/wiki/doku.php?id=ocl...ult_values

[kefir]

Thanks!

Note to the author(s): It'd be nice if oclHashCat output defaults in the --help info.