C1111233131211111211113313331333133313232212111133131133133313121111133221   >>    C111123313121111121111331333133313331323221211113313113313331312111113322   <<    C1111233131211111211113313331333133313232212111133131133133313121111133223   >>      C1111233131211111211113313331333133313232212111133131133133313121111133222   >>