wtih
with*
wtih
with*
M
should be S = 1/2, or M = 2
1,
should not be a possible S value, or the explanation should be better
C2vA1A2B1B2ΓtotE1111−9Cz211−1−1−1σxz1−11−11σyz1−1−113h = 4z, x2, y2, z2xy, Rzx, xz, Ryy, yz, Rx
the -9 in the second column, 6th row should be a 9.