```
?1 lowercase 26 chars abcdefghijklmnopqrstuvwxyz
?u uppercase 26 chars ABCDEFGHIJKLMNOPQRSTUVWXYZ
?d digits 10 chars 0123456789
?s special 33 chars «space»!"#$%&'()*+, - . /:; <=>?@[\]"_' {I}~
?a all 95 chars lowercase+uppercase+digits+special
?h hex 16 chars 0123456789abcdef
?H HEX 16 chars 0123456789ABCDEF
?b byte 256 byte 0x00 - 0xff
```
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