[andhotce] Decimal hexadecimal ASCII

The subset of printable ASCII characters whose values when written in hexadecimal do not contain the hexadecimal digits A through F.  Therefore, when written in hex, it is impossible to tell whether it is hex or decimal.  Vaguely the dual of deadbeef, etc.

 !"#$%&'()0123456789@ABCDEFGHIPQRSTUVWXY`abcdefghipqrstuvwxy

Missing letters are JKLMNOZ.