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