C312312111111331312111133133313331333133322331323133313222313232311   >>    C31231211111133131211113313331333133313332233132313331322231323231   <<    C312312111111331312111133133313331333133322331323133313222313232313   >>      C312312111111331312111133133313331333133322331323133313222313232312   >>