-a^{v2}_{a1} b^{a0}_{v0} c^{c0,a2}_{v1,v2} gamma1^{a1}_{a2} a+(v0) a+(v1) a-(a0) a-(c0)
+a^{v2}_{a1} b^{a2}_{v0} c^{c0,a0}_{v1,v2} gamma1^{a1}_{a2} a+(v0) a+(v1) a-(a0) a-(c0)
-1/2 a^{v2}_{a1} b^{a0}_{v2} c^{c0,a2}_{v0,v1} gamma1^{a1}_{a2} a+(v0) a+(v1) a-(a0) a-(c0)
+1/2 a^{v2}_{a1} b^{a2}_{v2} c^{c0,a0}_{v0,v1} gamma1^{a1}_{a2} a+(v0) a+(v1) a-(a0) a-(c0)