1/8 a^{v0,v1}_{a0,a1} b^{c0,c1}_{v0,v1} c^{a2}_{c2} a+(c2) a+(a0) a+(a1) a-(a2) a-(c1) a-(c0)
+1/4 a^{v0,v1}_{a0,a1} b^{c0,c1}_{v0,v1} c^{a2}_{c2} gamma1^{a1}_{a2} a+(c2) a+(a0) a-(c1) a-(c0)
-1/2 a^{v0,v2}_{a0,a1} b^{c0,c1}_{v1,v2} c^{a2}_{c2} gamma1^{a1}_{a2} a+(c2) a+(a0) a+(v1) a-(v0) a-(c1) a-(c0)