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