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