1/2 a^{c1}_{c0,a0,a1} b^{a2,a3,v0}_{c2} gamma1^{a1}_{a3} gamma1^{a0}_{a2} a+(c0) a+(c2) a-(v0) a-(c1)
+1/4 a^{c1}_{c0,a0,a1} b^{a2,a3,v0}_{c2} lambda2^{a0,a1}_{a2,a3} a+(c0) a+(c2) a-(v0) a-(c1)
-a^{c1}_{c0,a0,a2} b^{a1,a3,v0}_{c2} gamma1^{a2}_{a3} a+(c0) a+(c2) a+(a0) a-(v0) a-(a1) a-(c1)