1/4 a^{v0,v1}_{a0,a1} b^{v2}_{a2} c^{a3}_{v2} gamma1^{a2}_{a3} a+(a0) a+(a1) a-(v1) a-(v0)
-1/2 a^{v0,v2}_{a0,a1} b^{v1}_{a2} c^{a3}_{v2} gamma1^{a2}_{a3} a+(a0) a+(a1) a-(v1) a-(v0)
-1/2 a^{v0,v1}_{a0,a2} b^{v2}_{a1} c^{a3}_{v2} gamma1^{a2}_{a3} a+(a0) a+(a1) a-(v1) a-(v0)
+a^{v0,v2}_{a0,a2} b^{v1}_{a1} c^{a3}_{v2} gamma1^{a2}_{a3} a+(a0) a+(a1) a-(v1) a-(v0)