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