On 23.09.2013 21:17, Alberto Narduzzi wrote: > Ooops, > > I also forgot to mention that only I, X, C and M can appear up to three > times in a row. V, L and D does not; they can only once. Are you sure regarding M considering there is no symbol for 5000? Or didn't Romans count to more than 5000 - 1? Regards, sven