Auk

Auk is a nonoctave temperament in the 3/2.7.13 subgroup, notable for being the simplest EDF-based JI subgroup which does not have octaves and does not have nearly-redundant generators. It equates 3 7/1 (fifth-reduced to 112/81) with 13/1 (fifth-reduced to 832/729), tempering out the comma 87808/85293.