-a^{c0,a2}_{a0,a1} b^{v1}_{v0} c^{a4,v2}_{c1,a3} eta1^{a3}_{a2} gamma1^{a1}_{a4} a+(c1) a+(a0) a+(v0) a-(v2) a-(v1) a-(c0)
-a^{c0,a2}_{a0,a1} b^{v1}_{v0} c^{a4,v2}_{c1,a3} lambda2^{a1,a3}_{a2,a4} a+(c1) a+(a0) a+(v0) a-(v2) a-(v1) a-(c0)
-1/2 a^{c0,a3}_{a1,a2} b^{v1}_{v0} c^{a4,v2}_{c1,a0} lambda2^{a1,a2}_{a3,a4} a+(c1) a+(a0) a+(v0) a-(v2) a-(v1) a-(c0)