Enter Security Code 
Guess the letters and
numbers (passphrase riddle)
--
:6:
and not a
'C',
but
small 'A' +2 letter(s),
2 chars before R,
(??? - 6) = 1
&
0 chars before H
;
((((((((??? - 4) - 5) - 9) * 6) - 7) - 2) - 7) - 3) = -73,
 

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