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