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.FileReader;
import java.util.ArrayList;

/**
 * Problem C
 *
 * @author thomas
 */
public class RecycledNumbers {

    public static void main(String[] args) {
        String linea;
        try {
            FileReader fis = new FileReader("C-small-attempt0.in");
            BufferedReader buffer = new BufferedReader(fis);
            linea = buffer.readLine();
            int T = Integer.parseInt(linea.trim());
            int A, B;
            String[] aux;
            for (int caso = 1; caso <= T; caso++) {
                linea = buffer.readLine();
                aux = linea.split(" ");
                A = Integer.parseInt(aux[0]);
                B = Integer.parseInt(aux[1]);
                procesar(caso, A, B);
            }
            buffer.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void procesar(int caso, int A, int B) {
//        System.out.println("Case #" + caso + ": " + A + " " + B);
        int numPair = 0;
        for (int N = A; N <= B; N++) {
            numPair += pairOf(N, B);
        }
        System.out.println("Case #" + caso + ": " + numPair);
    }

    public static void main_p(String[] args) {
//        pairOf(12345);
//        pairOf(101);
    }
    
    public static int pairOf(int N, int B) {
        ArrayList<Integer> pares = new ArrayList<Integer>();
        String sN = N + "";
        //Si es un solo digito no hay par
        if (sN.length() <= 1) {
            return 0;
        }

        //Evaluamos si el numero tiene los digitos iguales
        //En este caso el par es el mismo numero
        //Y como los pares no pueden ser iguales se descarta este caso
        
        boolean sameDigit = true;
        for (int i = 1; i < sN.length() && sameDigit; i++) {
            sameDigit = sN.charAt(i - 1) == sN.charAt(i);
        }
        if (sameDigit) {
            return 0;
        }


        //Comenzamos a buscar los pares
        String N1, N2;
        int split = 1;
        int M, numPair = 0;
        while (split < sN.length()) {
            N1 = sN.substring(0, split);
            N2 = sN.substring(split);
            M = Integer.parseInt(N2 + N1);
            //Si empieza en cero, ya los digitos no concuerdan
            //O Si M es mayor que B se sale del rango
            //O si N>=M no cumple con la restriccion A â¤ n < m â¤ B 
            if ((N2.indexOf("0") == 0) || (M > B) || (N>=M)) {
                split++;
                continue;
            }
            if(!pares.contains(M)){
                pares.add(M);
            }else{
                split++;
                continue;
            }
            numPair++;
            debug(sN + " => " + M + "[" + N1 + "-" + N2 + "]");

            split++;
        }
        return numPair;
    }

    public static void debug(Object obj) {
//        System.out.println(obj);
    }
}
