1/4 a^{a0}_{c4} b^{c0,c1}_{a1,v0} c^{c4,a2}_{c2,c3} gamma1^{a1}_{a2} a+(c2) a+(c3) a+(v0) a-(a0) a-(c1) a-(c0)
-1/2 a^{a0}_{c4} b^{c0,c4}_{a1,v0} c^{c3,a2}_{c1,c2} gamma1^{a1}_{a2} a+(c1) a+(c2) a+(v0) a-(a0) a-(c3) a-(c0)
+1/4 a^{a1}_{c4} b^{c0,c1}_{a2,v0} c^{c4,a0}_{c2,c3} eta1^{a2}_{a1} a+(c2) a+(c3) a+(v0) a-(a0) a-(c1) a-(c0)
-1/2 a^{a1}_{c4} b^{c0,c4}_{a2,v0} c^{c3,a0}_{c1,c2} eta1^{a2}_{a1} a+(c1) a+(c2) a+(v0) a-(a0) a-(c3) a-(c0)