With a different divisor than 3 different character sets are possible. 1 is a reference set.

    1 => abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*(
+))_+1234567890,.?;
    3 => abdhopwCEFIJLQRTX#%&*))_1248,?
    7 => alsGHTZ$*6?
    21 => aT*?
    2 => bdfhjlnprtvxzBDFHJLNPRTVXZ @$^&*(24680,.
    5 => bdfhjlnprtvxzBDFHJLNPRTVXZ @$^&*(24680,.
    6 => bdhpFJLRTX&*248,
    10 => bdfhjlnprtvxzBDFHJLNPRTVXZ @$^&*(24680,.
    15 => bdhpFJLRTX&*248,
    30 => bdhpFJLRTX&*248,
    37 => bpwFT#*18?
    74 => bpFT*8
[download]