1/4 a^{v0,v1}_{c0,c1} b^{c0}_{a0} c^{c1,a3}_{a1,a2} a+(a0) a+(a1) a+(a2) a-(v1) a-(v0) a-(a3)
+1/4 a^{v0,v1}_{c0,c1} b^{c0}_{a2} c^{c1,a3}_{a0,a1} gamma1^{a2}_{a3} a+(a0) a+(a1) a-(v1) a-(v0)
+1/4 a^{v0,v1}_{c0,c2} b^{c1}_{a2} c^{c2,a3}_{a0,a1} gamma1^{a2}_{a3} a+(c0) a+(a0) a+(a1) a-(v1) a-(v0) a-(c1)
-1/4 a^{v0,v1}_{c0,c2} b^{c2}_{a2} c^{c1,a3}_{a0,a1} gamma1^{a2}_{a3} a+(c0) a+(a0) a+(a1) a-(v1) a-(v0) a-(c1)