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