1/2 a^{v1}_{v0} b^{c0,a2}_{a0,a1} c^{a3,v3}_{c1,v2} lambda2^{a0,a1}_{a2,a3} a+(c1) a+(v0) a+(v2) a-(v3) a-(v1) a-(c0)
+1/2 a^{v2}_{v0} b^{c0,a2}_{a0,a1} c^{a3,v1}_{c1,v2} lambda2^{a0,a1}_{a2,a3} a+(c1) a+(v0) a-(v1) a-(c0)
+a^{v2}_{v0} b^{c0,a1}_{a0,a2} c^{a3,v1}_{c1,v2} gamma1^{a2}_{a3} a+(c1) a+(a0) a+(v0) a-(v1) a-(a1) a-(c0)