function R = spath2cell(M,s)
R = {};
A = ['@' selfloops(M,M.q0)];
R{end+1} = A;
q = M.q0;
for i=1:length(s)
  s1 = s(i);
  R{end+1} = s1;
  q = dfsa_delta(M,q,s1);
  A = ['@' selfloops(M,q)];
  R{end+1} = A;
end
return