1/16 a^{a1,a2}_{c0,a0} b^{c1,c2}_{a3,v0} c^{c3,c4}_{v1,v2} lambda2^{a0,a3}_{a1,a2} a+(c0) a+(v0) a+(v1) a+(v2) a-(c4) a-(c3) a-(c2) a-(c1)
-1/4 a^{a1,a2}_{c3,a0} b^{c0,c1}_{a3,v0} c^{c2,c3}_{v1,v2} eta1^{a3}_{a2} a+(a0) a+(v0) a+(v1) a+(v2) a-(a1) a-(c2) a-(c1) a-(c0)
-1/8 a^{a1,a2}_{c3,a0} b^{c0,c1}_{a3,v0} c^{c2,c3}_{v1,v2} lambda2^{a0,a3}_{a1,a2} a+(v0) a+(v1) a+(v2) a-(c2) a-(c1) a-(c0)
-1/4 a^{a1,a2}_{c3,a0} b^{c0,c3}_{a3,v0} c^{c1,c2}_{v1,v2} eta1^{a3}_{a2} a+(a0) a+(v0) a+(v1) a+(v2) a-(a1) a-(c2) a-(c1) a-(c0)
-1/8 a^{a1,a2}_{c3,a0} b^{c0,c3}_{a3,v0} c^{c1,c2}_{v1,v2} lambda2^{a0,a3}_{a1,a2} a+(v0) a+(v1) a+(v2) a-(c2) a-(c1) a-(c0)