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.*;
import java.util.Set;
import java.util.HashSet;

public class recycled {
	public static int A,B;
	public static int[] t = {1,10,100,1000,10000,100000,1000000};
	
	public static int solve(){
		if(B<10) return 0;
		int DB=0,kit,m,n;
		
		int lg = 0;
		while(lg < 6 && A >= t[lg+1]) lg++; 
		//System.out.println(A+" "+lg);
		
		for(n = A; n <B; n++){
			kit = 1;
			Set H = new HashSet();
			while(t[kit] < n){
				m = t[lg-kit+1]*(n%t[kit])+(n/t[kit]);
				//System.out.println("testing >>> "+n+" - "+m);	
				if( n < m && m <= B && (n%t[kit])*10>=t[kit] && !H.contains(m)) {
					
					DB++;
					H.add(m);
					//System.out.println("OK >>> "+n+" - "+m+" DB= "+DB);	
				}
				kit++;
			}
		}
		return DB;
	}
	
	public static void main (String args[]) throws IOException{
		
		
		BufferedReader be = new BufferedReader(new FileReader("C-small.in"));
		int T = Integer.parseInt(be.readLine());
		for(int i=1; i<=T; i++){
			String s = be.readLine();
			A = Integer.parseInt(s.split(" ")[0]);
			B = Integer.parseInt(s.split(" ")[1]);
			System.out.println("Case #"+i+": "+solve());
		}
		be.close();
	}
}

