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