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