C312312111111331312111133133313121111133313113313331322331333131123313232213121   >>    C31231211111133131211113313331312111113331311331333132233133313112331323221312   <<    C312312111111331312111133133313121111133313113313331322331333131123313232213123   >>      C312312111111331312111133133313121111133313113313331322331333131123313232213122   >>