1/2 a^{c2,a0}_{c0,c1} b^{c3,a2}_{a1,v0} c^{v1}_{a3} eta1^{a3}_{a2} eta1^{a1}_{a0} a+(c0) a+(c1) a+(v0) a-(v1) a-(c3) a-(c2)
+1/2 a^{c2,a0}_{c0,c1} b^{c3,a2}_{a1,v0} c^{v1}_{a3} lambda2^{a1,a3}_{a0,a2} a+(c0) a+(c1) a+(v0) a-(v1) a-(c3) a-(c2)
-a^{c1,a0}_{c0,c2} b^{c2,a2}_{a1,v0} c^{v1}_{a3} eta1^{a3}_{a2} a+(c0) a+(a1) a+(v0) a-(v1) a-(a0) a-(c1)
+a^{c1,a0}_{c0,c2} b^{c2,a2}_{a1,v0} c^{v1}_{a3} eta1^{a3}_{a2} eta1^{a1}_{a0} a+(c0) a+(v0) a-(v1) a-(c1)
+a^{c1,a0}_{c0,c2} b^{c2,a2}_{a1,v0} c^{v1}_{a3} lambda2^{a1,a3}_{a0,a2} a+(c0) a+(v0) a-(v1) a-(c1)
+a^{c1,a2}_{c0,c2} b^{c2,a1}_{a0,v0} c^{v1}_{a3} eta1^{a3}_{a2} a+(c0) a+(a0) a+(v0) a-(v1) a-(a1) a-(c1)
-a^{c1,a2}_{c0,c2} b^{c2,a0}_{a3,v0} c^{v1}_{a1} eta1^{a3}_{a2} a+(c0) a+(a1) a+(v0) a-(v1) a-(a0) a-(c1)