Missing characters from hashcat brute-force?

[royce]

Yes, the default incremental mode is not a full brute force, but rather one that is optimized for likely candidates without being exhaustive:

Guess.Mask.......: ?1?2?2?2?2?2?2?3 [8]
Guess.Charset....: -1 ?l?d?u, -2 ?l?d, -3 ?l?d*!$@_, -4 Undefined