(1) each segment, down to the tiniest hexad of cilia, is practically identical in shape(2) The duodecad can be considered as two hexads , upper and lower; as three tetrads, working in dynamic cooperation; or as four triads in a synthesis of immanence and transcendence.(3) Two lyre-like instruments, Kitharas I & II, date from 1938 and have twelve hexads per instrument.(4) Unfortunately there are not hexads or octads in nature.(5) These axes are, respectively, diads, triads, tetrads, and hexads .
