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