gMarked_fsMarked_sfMarked_gavuyxs(a)as(s(x))xs(f(x,y))f(s(y),s(x))s(g(x,y))g(s(x),s(y))f(x,a)xf(a,y)yf(g(x,y),g(u,v))g(f(x,u),f(y,v))g(a,a)as(a)as(s(x))xs(f(x,y))f(s(y),s(x))s(g(x,y))g(s(x),s(y))f(x,a)xf(a,y)yf(g(x,y),g(u,v))g(f(x,u),f(y,v))g(a,a)aMarked_s(f(x,y))Marked_f(s(y),s(x))Marked_s(f(x,y))Marked_s(y)Marked_s(f(x,y))Marked_s(x)Marked_s(g(x,y))Marked_g(s(x),s(y))Marked_s(g(x,y))Marked_s(x)Marked_s(g(x,y))Marked_s(y)Marked_f(g(x,y),g(u,v))Marked_g(f(x,u),f(y,v))Marked_f(g(x,y),g(u,v))Marked_f(x,u)Marked_f(g(x,y),g(u,v))Marked_f(y,v)s(a)as(s(x))xs(f(x,y))f(s(y),s(x))s(g(x,y))g(s(x),s(y))f(x,a)xf(a,y)yf(g(x,y),g(u,v))g(f(x,u),f(y,v))g(a,a)aMarked_s(f(x,y))Marked_s(y)Marked_s(f(x,y))Marked_s(x)Marked_s(g(x,y))Marked_s(x)Marked_s(g(x,y))Marked_s(y)a0f1110Marked_s30s10g2120s(a)as(s(x))xs(f(x,y))f(s(y),s(x))s(g(x,y))g(s(x),s(y))f(x,a)xf(a,y)yf(g(x,y),g(u,v))g(f(x,u),f(y,v))g(a,a)aMarked_f(g(x,y),g(u,v))Marked_f(x,u)Marked_f(g(x,y),g(u,v))Marked_f(y,v)a0f2220s20Marked_f10g2110