C12121321333132233131333131133131211113313121133112211232312311   >>    C1212132133313223313133313113313121111331312113311221123231231   <<    C12121321333132233131333131133131211113313121133112211232312313   >>      C12121321333132233131333131133131211113313121133112211232312312   >>