INORDER = a d e f g i l m n o p r t u v w x y z;
OUTORDER = F;
f1 = (y*o*u);
f2 = (a*r*e);
f3 = (a*n);
f4 = (a*m*z*i*n*g);
f5 = (p*r*o*f);
f6 = (d*r);
f7 = (x*i*n*g);
f8 = (l*o*v*e);
f9 = (t*e*a*m);
f10 = (t*w*o);
F = (f1+f2+f3+f4+f5+f6+f7+f8+f9+f10);