package jp.funnything.competition.util;

import java.math.BigInteger;

/**
 * Utility for BigInteger
 */
public class BI {
    public static BigInteger ZERO = BigInteger.ZERO;
    public static BigInteger ONE = BigInteger.ONE;

    public static BigInteger add( final BigInteger x , final BigInteger y ) {
        return x.add( y );
    }

    public static BigInteger add( final BigInteger x , final long y ) {
        return add( x , v( y ) );
    }

    public static BigInteger add( final long x , final BigInteger y ) {
        return add( v( x ) , y );
    }

    public static int cmp( final BigInteger x , final BigInteger y ) {
        return x.compareTo( y );
    }

    public static int cmp( final BigInteger x , final long y ) {
        return cmp( x , v( y ) );
    }

    public static int cmp( final long x , final BigInteger y ) {
        return cmp( v( x ) , y );
    }

    public static BigInteger div( final BigInteger x , final BigInteger y ) {
        return x.divide( y );
    }

    public static BigInteger div( final BigInteger x , final long y ) {
        return div( x , v( y ) );
    }

    public static BigInteger div( final long x , final BigInteger y ) {
        return div( v( x ) , y );
    }

    public static BigInteger mod( final BigInteger x , final BigInteger y ) {
        return x.mod( y );
    }

    public static BigInteger mod( final BigInteger x , final long y ) {
        return mod( x , v( y ) );
    }

    public static BigInteger mod( final long x , final BigInteger y ) {
        return mod( v( x ) , y );
    }

    public static BigInteger mul( final BigInteger x , final BigInteger y ) {
        return x.multiply( y );
    }

    public static BigInteger mul( final BigInteger x , final long y ) {
        return mul( x , v( y ) );
    }

    public static BigInteger mul( final long x , final BigInteger y ) {
        return mul( v( x ) , y );
    }

    public static BigInteger sub( final BigInteger x , final BigInteger y ) {
        return x.subtract( y );
    }

    public static BigInteger sub( final BigInteger x , final long y ) {
        return sub( x , v( y ) );
    }

    public static BigInteger sub( final long x , final BigInteger y ) {
        return sub( v( x ) , y );
    }

    public static BigInteger v( final long value ) {
        return BigInteger.valueOf( value );
    }
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;


public class Numbers {
	
	private static int [][] input;
	private static int [] output;
	
	public static void main(String [] args) throws NumberFormatException, IOException{
		
		readData();
		output = new int [input.length];
		
		for (int i=0 ; i< input.length ; i++){
			output[i] = numberOfPairs(input[i][0], input[i][1]);
		}
		
		writeData();
	}

	public static int numberOfPairs(int a, int b){
		int r=0;
		for (int i=a ; i<=b;i++ ){
			int f = flip(i);
			if ( i<f && a<=f && f<=b ){
				r++;
				}
			if (i>100){
				int f2 = flip2(i);
				if (( i<f2 && a<=f2 && f2<=b )){
					r++;
				}
			}
			
		}
		return r;
		
	}
	
	public static int flip(int i){
		
		String A = Integer.toString( i );
		String ans = A.substring( 1)+ A.substring( 0, 1 );
		return Integer.parseInt( ans );
	
	}
	public static int flip2(int i){
	
	String A = Integer.toString( i );
	String ans = A.substring( 2)+ A.substring( 0, 2 );
	return Integer.parseInt( ans );

	}
	
	public static void readData() throws NumberFormatException, IOException{
		FileReader fr = new FileReader("Input.txt");
		BufferedReader br = new BufferedReader(fr);
		int numberOfInputs = Integer.parseInt( br.readLine() );
		input = new int [numberOfInputs][2];
		for (int i = 0; i<numberOfInputs ; i++  ){
			String [] numbers = ((String)(br.readLine())).split( " " );   
			for (int j = 0 ; j<2 ;j++){
				input [i][j] =  Integer.parseInt(numbers [j]);
			}
		}
		br.close();
	}
	
	public static void writeData() throws IOException{
		FileWriter fw = new FileWriter("Output.txt");
		BufferedWriter bw = new BufferedWriter(fw);
		for (int i = 0; i< output.length ; i++ ){
			String out = "Case #" +(i+1) +": "+ output[i];
			bw.write( out );
			bw.newLine();
		}
		bw.close();
	}
}
