-1/2 a^{v0,v1}_{c0,a1} b^{c1,a2}_{c3,a0} c^{c3}_{c2} gamma1^{a1}_{a2} a+(c0) a+(c2) a+(a0) a-(v1) a-(v0) a-(c1)
+1/2 a^{v0,v1}_{c1,a0} b^{c1,a2}_{c2,a1} c^{c2}_{c0} a+(c0) a+(a0) a+(a1) a-(v1) a-(v0) a-(a2)
-1/2 a^{v0,v1}_{c1,a1} b^{c1,a2}_{c2,a0} c^{c2}_{c0} gamma1^{a1}_{a2} a+(c0) a+(a0) a-(v1) a-(v0)
+1/2 a^{v0,v1}_{c3,a1} b^{c1,a2}_{c0,a0} c^{c3}_{c2} gamma1^{a1}_{a2} a+(c0) a+(c2) a+(a0) a-(v1) a-(v0) a-(c1)
-1/2 a^{v0,v1}_{c3,a1} b^{c3,a2}_{c0,a0} c^{c2}_{c1} gamma1^{a1}_{a2} a+(c0) a+(c1) a+(a0) a-(v1) a-(v0) a-(c2)