C3123121111113313121111331333133313331333223113121111133313232233312121   >>    C312312111111331312111133133313331333133322311312111113331323223331212   <<    C3123121111113313121111331333133313331333223113121111133313232233312123   >>      C3123121111113313121111331333133313331333223113121111133313232233312122   >>