-1/2 a^{a1}_{a0} b^{a2}_{v0} c^{c1,c2}_{c0,a3} eta1^{a3}_{a1} gamma1^{a0}_{a2} a+(c0) a+(v0) a-(c2) a-(c1)
-1/2 a^{a1}_{a0} b^{a2}_{v0} c^{c1,c2}_{c0,a3} lambda2^{a0,a3}_{a1,a2} a+(c0) a+(v0) a-(c2) a-(c1)