-1/2 a^{a1,a2}_{c0,a0} b^{v1,v2}_{a3,v0} c^{c0}_{v2} a+(a0) a+(a3) a+(v0) a-(v1) a-(a2) a-(a1)
+a^{a1,a2}_{c0,a0} b^{v1,v2}_{a3,v0} c^{c0}_{v2} eta1^{a3}_{a2} a+(a0) a+(v0) a-(v1) a-(a1)
-1/2 a^{a1,a2}_{c0,a0} b^{v1,v2}_{a3,v0} c^{c0}_{v2} lambda2^{a0,a3}_{a1,a2} a+(v0) a-(v1)
+a^{a1,a2}_{c0,a0} b^{v1,v2}_{a3,v0} c^{c1}_{v2} eta1^{a3}_{a2} a+(c0) a+(a0) a+(v0) a-(v1) a-(a1) a-(c1)
-1/2 a^{a1,a2}_{c0,a0} b^{v1,v2}_{a3,v0} c^{c1}_{v2} lambda2^{a0,a3}_{a1,a2} a+(c0) a+(v0) a-(v1) a-(c1)
-1/2 a^{a1,a2}_{c0,a0} b^{v1,v2}_{a3,v0} c^{c0}_{v3} eta1^{a3}_{a2} a+(a0) a+(v0) a+(v3) a-(v2) a-(v1) a-(a1)
+1/4 a^{a1,a2}_{c0,a0} b^{v1,v2}_{a3,v0} c^{c0}_{v3} lambda2^{a0,a3}_{a1,a2} a+(v0) a+(v3) a-(v2) a-(v1)
+1/4 a^{a1,a2}_{c0,a0} b^{v1,v2}_{a3,v0} c^{c1}_{v3} lambda2^{a0,a3}_{a1,a2} a+(c0) a+(v0) a+(v3) a-(v2) a-(v1) a-(c1)