W-representations carried by the wcells in SL(2,H) x PU(2,2) block of SL4 wcell#0: cardinality : 2 special orbit : [2, 2] special representation : [2, 2] cell representation : phi[2,2] wcell#1: cardinality : 1 special orbit : [1, 1, 1, 1] special representation : [1, 1, 1, 1] cell representation : phi[1,1,1,1]