C1111233131211111211113313331333133313232212111133131133133313331333222212311   >>    C111123313121111121111331333133313331323221211113313113313331333133322221231   <<    C1111233131211111211113313331333133313232212111133131133133313331333222212313   >>      C1111233131211111211113313331333133313232212111133131133133313331333222212312   >>