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