package jp.funnything.competition.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;

import org.apache.commons.io.IOUtils;

public class QuestionReader {
    private final BufferedReader _reader;

    public QuestionReader( final File input ) {
        try {
            _reader = new BufferedReader( new FileReader( input ) );
        } catch ( final FileNotFoundException e ) {
            throw new RuntimeException( e );
        }
    }

    public void close() {
        IOUtils.closeQuietly( _reader );
    }

    public String read() {
        try {
            return _reader.readLine();
        } catch ( final IOException e ) {
            throw new RuntimeException( e );
        }
    }

    public BigDecimal[] readBigDecimals() {
        return readBigDecimals( " " );
    }

    public BigDecimal[] readBigDecimals( final String separator ) {
        final String[] tokens = readTokens( separator );

        final BigDecimal[] values = new BigDecimal[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = new BigDecimal( tokens[ index ] );
        }

        return values;
    }

    public BigInteger[] readBigInts() {
        return readBigInts( " " );
    }

    public BigInteger[] readBigInts( final String separator ) {
        final String[] tokens = readTokens( separator );

        final BigInteger[] values = new BigInteger[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = new BigInteger( tokens[ index ] );
        }

        return values;
    }

    public int readInt() {
        final int[] values = readInts();

        if ( values.length != 1 ) {
            throw new IllegalStateException( "Try to read single interger, but the line contains zero or multiple values" );
        }

        return values[ 0 ];
    }

    public int[] readInts() {
        return readInts( " " );
    }

    public int[] readInts( final String separator ) {
        final String[] tokens = readTokens( separator );

        final int[] values = new int[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = Integer.parseInt( tokens[ index ] );
        }

        return values;
    }

    public long readLong() {
        final long[] values = readLongs();

        if ( values.length != 1 ) {
            throw new IllegalStateException( "Try to read single interger, but the line contains zero or multiple values" );
        }

        return values[ 0 ];
    }

    public long[] readLongs() {
        return readLongs( " " );
    }

    public long[] readLongs( final String separator ) {
        final String[] tokens = readTokens( separator );

        final long[] values = new long[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = Long.parseLong( tokens[ index ] );
        }

        return values;
    }

    public String[] readTokens() {
        return readTokens( " " );
    }

    public String[] readTokens( final String separator ) {
        return read().split( separator );
    }
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import util.MyUtil;


public class ProblemC {

	/**
	 * @param args
	 * @throws IOException 
	 * @throws NumberFormatException 
	 */
	public static void main(String[] args) throws Exception {
		String title = "C-small-attempt0.in";

		BufferedReader reader = MyUtil.getReader(title);
		int caseNumber = Integer.parseInt(reader.readLine());
		BufferedWriter writer = MyUtil.getWriter(title);
		
		for (int i = 0 ; i < caseNumber; i++){
			String line = reader.readLine();
			String result = subRoutine(line);
			
			writer.write("Case #" + (i + 1) + ": " + result + "\n");
			System.out.println("Case #" + (i + 1) + ": " + result);
		}
		
		writer.flush();

	}
	
	private static String subRoutine(String line){
		StringBuilder sb = new StringBuilder();
		String[] elements = line.split(" ");
		long A = Long.parseLong(elements[0]);
		long B = Long.parseLong(elements[1]);
		long count = 0;
		
		for (long n = A ; n < B ; n++){
			Set<Long> ms = new HashSet<Long>();
			String str = String.valueOf(Math.abs((long)n));
			String newn = Long.toString(n);
			for (int i = 1; i < str.length(); i++){
				newn = shift(newn);
				
				long m = Long.parseLong(newn);
				if (m > n && m <= B && m > A){
					ms.add(m);
					//System.out.println(n + " : " + m);
					test(n,m);
				}
			}
			count += ms.size();
			
		}
		sb.append(count);
		return sb.toString();
	}
	
	public static boolean test(long n, long m){
		String nstr = Long.toString(n);
		String mstr = Long.toString(m);
		
		for (int i = 0; i < nstr.length(); i++){
			nstr = nstr.charAt(nstr.length() - 1) + nstr;
			nstr = nstr.substring(0, mstr.length());
			
			if (nstr.equals(mstr)){
				return true;
			}
		}
		return false;
	}
	private static String shift(String nstr){
		long n =  Long.parseLong(nstr);
		StringBuilder shifted = new StringBuilder();
		long last = n % 10;
		shifted.append(last);
		for (int i = 0; i < nstr.length() - 1; i++){
			shifted.append(nstr.charAt(i));
		}
		
		return shifted.toString();
	}
}
