1/2 a^{a0}_{c0} b^{c0}_{c1} c^{c1,a3}_{a1,a2} a+(a1) a+(a2) a-(a3) a-(a0)
+1/2 a^{a0}_{c0} b^{c0}_{c1} c^{c1,a3}_{a1,a2} lambda2^{a1,a2}_{a0,a3}
+1/2 a^{a0}_{c0} b^{c2}_{c1} c^{c3,a3}_{a1,a2} lambda2^{a1,a2}_{a0,a3} a+(c0) a+(c1) a-(c3) a-(c2)
+1/2 a^{a0}_{c0} b^{c1}_{c2} c^{c2,a3}_{a1,a2} lambda2^{a1,a2}_{a0,a3} a+(c0) a-(c1)
+a^{a2}_{c0} b^{c0}_{c1} c^{c1,a1}_{a0,a3} eta1^{a3}_{a2} a+(a0) a-(a1)
+a^{a2}_{c0} b^{c1}_{c2} c^{c2,a1}_{a0,a3} eta1^{a3}_{a2} a+(c0) a+(a0) a-(a1) a-(c1)
-1/2 a^{a0}_{c2} b^{c1}_{c0} c^{c2,a3}_{a1,a2} lambda2^{a1,a2}_{a0,a3} a+(c0) a-(c1)
+1/2 a^{a0}_{c2} b^{c2}_{c0} c^{c1,a3}_{a1,a2} lambda2^{a1,a2}_{a0,a3} a+(c0) a-(c1)
-a^{a2}_{c2} b^{c1}_{c0} c^{c2,a1}_{a0,a3} eta1^{a3}_{a2} a+(c0) a+(a0) a-(a1) a-(c1)
+a^{a2}_{c2} b^{c2}_{c0} c^{c1,a1}_{a0,a3} eta1^{a3}_{a2} a+(c0) a+(a0) a-(a1) a-(c1)