TII subcells for the SO(8,7) x Sp(7) block of SO15
#
cell#0 , |C| = 1
special orbit = [15]
special rep = [[7], []] , dim = 1
cell rep = phi[[7],[]]
TII depth = 1
TII multiplicity polynomial = X
TII subcells:
  tii[40,1] := {0}