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.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;


public class Recycled_numbers {

	 public static boolean isSubString(String text1, String text2) {
	        return isSubString(text1, text2, false);
	    }

	    private static boolean isSubString(String text1, String text2, boolean afterMatch) {
	        if (text1.length()==0) {
	            return true;
	        }
	        if (text2.length()==0) {
	            return false;
	        }
	        return (text1.charAt(0)==text2.charAt(0) && isSubString(text1.substring(1), text2.substring(1), true)) ||
	               (!afterMatch && isSubString(text1, text2.substring(1), false));
	    }
	    
	public static boolean isRecycledPair(int a, int b){
		String s1 = Integer.toString(a);
		String s2 = Integer.toString(b);
		if((s1.length() == s2.length()) && s1.length()>0){
			String s1s1 = s1+s1;
			return isSubString(s2,s1s1);
		}
		
		return false;
	}
	
	public static int recycle(int a, int b){
		int n;
		int m;
		int count=0;
		for(n=a;n<b;n++){
			for(m=n+1;m<=b;m++){
				if(isRecycledPair(n,m))
					count++;
			}
		}
		return count;
	}
	
	public static void solve() throws IOException {
		Scanner sc = new Scanner(new FileReader("C-small-attempt0.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("C-small-attempt0.out"));
		
		int nbCases = sc.nextInt();
		
		for (int caseNum = 0; caseNum < nbCases; caseNum++) {
			pw.print("Case #" + (caseNum + 1) + ": ");
			
			int a = sc.nextInt();
			int b = sc.nextInt();
			int res = recycle(a,b);
			
			pw.println(res);
		}
		
		pw.flush();
		pw.close();
		sc.close();
	}
	
	public static void main(String args[]) throws IOException{
		solve();
	}

}
