a^{a0}_{v0} b^{c0,v1}_{a1,a2} c^{a3,v3}_{c1,v2} eta1^{a1}_{a0} gamma1^{a2}_{a3} a+(c1) a+(v0) a+(v2) a-(v3) a-(v1) a-(c0)
-1/2 a^{a0}_{v0} b^{c0,v1}_{a1,a2} c^{a3,v3}_{c1,v2} lambda2^{a1,a2}_{a0,a3} a+(c1) a+(v0) a+(v2) a-(v3) a-(v1) a-(c0)
+a^{a0}_{v0} b^{c0,v2}_{a1,a2} c^{a3,v1}_{c1,v2} eta1^{a1}_{a0} gamma1^{a2}_{a3} a+(c1) a+(v0) a-(v1) a-(c0)
-a^{a0}_{v0} b^{c0,v2}_{a1,a2} c^{a3,v1}_{c1,v2} gamma1^{a2}_{a3} a+(c1) a+(a1) a+(v0) a-(v1) a-(a0) a-(c0)
-1/2 a^{a0}_{v0} b^{c0,v2}_{a1,a2} c^{a3,v1}_{c1,v2} lambda2^{a1,a2}_{a0,a3} a+(c1) a+(v0) a-(v1) a-(c0)
-a^{a2}_{v0} b^{c0,v2}_{a0,a3} c^{a1,v1}_{c1,v2} eta1^{a3}_{a2} a+(c1) a+(a0) a+(v0) a-(v1) a-(a1) a-(c0)