1/8 a^{v0,v1}_{a0,a1} b^{a2,a3}_{v0,v1} c^{}_{} a+(a0) a+(a1) a-(a3) a-(a2)
+1/4 a^{v0,v1}_{a0,a1} b^{a2,a3}_{v0,v1} c^{}_{} gamma1^{a1}_{a3} gamma1^{a0}_{a2}
+1/8 a^{v0,v1}_{a0,a1} b^{a2,a3}_{v0,v1} c^{}_{} lambda2^{a0,a1}_{a2,a3}
+1/8 a^{v0,v1}_{a0,a1} b^{a2,a3}_{v2,v3} c^{}_{} gamma1^{a1}_{a3} gamma1^{a0}_{a2} a+(v2) a+(v3) a-(v1) a-(v0)
+1/16 a^{v0,v1}_{a0,a1} b^{a2,a3}_{v2,v3} c^{}_{} lambda2^{a0,a1}_{a2,a3} a+(v2) a+(v3) a-(v1) a-(v0)
-1/2 a^{v0,v2}_{a0,a1} b^{a2,a3}_{v1,v2} c^{}_{} gamma1^{a1}_{a3} gamma1^{a0}_{a2} a+(v1) a-(v0)
-1/4 a^{v0,v2}_{a0,a1} b^{a2,a3}_{v1,v2} c^{}_{} lambda2^{a0,a1}_{a2,a3} a+(v1) a-(v0)
+1/2 a^{v0,v1}_{a0,a2} b^{a1,a3}_{v0,v1} c^{}_{} gamma1^{a2}_{a3} a+(a0) a-(a1)
-a^{v0,v2}_{a0,a2} b^{a1,a3}_{v1,v2} c^{}_{} gamma1^{a2}_{a3} a+(a0) a+(v1) a-(v0) a-(a1)