C312312111133131212111133133313331333133312133313331333132222123221   >>    C31231211113313121211113313331333133313331213331333133313222212322   <<    C312312111133131212111133133313331333133312133313331333132222123223   >>      C312312111133131212111133133313331333133312133313331333132222123222   >>