C312312111133131212111133133313331323133313233121111331311331333133313221313221   >>    C31231211113313121211113313331333132313331323312111133131133133313331322131322   <<    C312312111133131212111133133313331323133313233121111331311331333133313221313223   >>      C312312111133131212111133133313331323133313233121111331311331333133313221313222   >>