TII subcells for the SO(4,3) x Sp(3) block of SO7
#
cell#0 , |C| = 1
special orbit = [7]
special rep = [[3], []] , dim = 1
cell rep = phi[[3],[]]
TII depth = 1
TII multiplicity polynomial = X
TII subcells:
  tii[6,1] := {0}