C312312111133131212111133133313331333133112113313331333133313113113313221   >>    C31231211113313121211113313331333133313311211331333133313331311311331322   <<    C312312111133131212111133133313331333133112113313331333133313113113313223   >>      C312312111133131212111133133313331333133112113313331333133313113113313222   >>