C13332313311211113313331333131133133313232233131133131323223313121   >>    C1333231331121111331333133313113313331323223313113313132322331312   <<    C13332313311211113313331333131133133313232233131133131323223313123   >>      C13332313311211113313331333131133133313232233131133131323223313122   >>