72-tone ET six-string Bassguitar

My name is Jeroen Thesseling. As a bassplayer (28) I am studying on a
72-tone ET six-string Bassguitar.
This instrument is fretted in thirdtones (18/Oct.ET) while the strings
are tuned : X , X+1/12th-tone , X+1/6th-tone , X+1/4th-tone ,
X+1/3rd-tone and X+5/12th-tones ( Based on the tuning-method of the
96-tone Guitar ).
I try to find a different string-tuning which creates a unique unequal
scale on this Bass... Does anyone has suggestions?