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