TII subcells for the U(2,1) x GL(3,R) block of GL3
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cell#0 , |C| = 1
special orbit = [3]
special rep = [3] , dim = 1
cell rep = phi[3]
TII depth = 1
TII multiplicity polynomial = X
TII subcells:
  tii[3,1] := {0}

cell#1 , |C| = 2
special orbit = [2, 1]
special rep = [2, 1] , dim = 2
cell rep = phi[2,1]
TII depth = 1
TII multiplicity polynomial = 2*X
TII subcells:
  tii[2,1] := {1}
  tii[2,2] := {0}

cell#2 , |C| = 2
special orbit = [2, 1]
special rep = [2, 1] , dim = 2
cell rep = phi[2,1]
TII depth = 1
TII multiplicity polynomial = 2*X
TII subcells:
  tii[2,1] := {0}
  tii[2,2] := {1}

cell#3 , |C| = 1
special orbit = [1, 1, 1]
special rep = [1, 1, 1] , dim = 1
cell rep = phi[1,1,1]
TII depth = 1
TII multiplicity polynomial = X
TII subcells:
  tii[1,1] := {0}