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.*;
import static java.lang.Integer.*;


public class RecycledNumbers {
	

	public static void main(String[] args) throws IOException {
		BufferedReader scan = new BufferedReader(new InputStreamReader(
				System.in));
		int n = parseInt(scan.readLine());
		for (int i = 0; i < n; i++) {
			String[] line = scan.readLine().split(" ");
			int inf = parseInt(line[0]);
			int sup = parseInt(line[1]);
			int res = 0;
			for(int j = inf;j<=sup;j++){
				for (int j2 = j+1; j2 <= sup; j2++) {
					res+=check(j,j2);
				}
			}
			System.out.println("Case #"+(i+1)+": "+res);
		}
	}
	
	public static int check(int a,int b){
		int res = 0;
		int tama = count(a);
		int tamb = count(b);
		String sa = (a+"");
		String sb = (b+"");
		if(tama==tamb){
			for (int i = 0; i <tama; i++) {
				if(sa.charAt(i)==sb.charAt(0)){
					String aux = sa.substring(i,sb.length())+sa.substring(0,i);
					if(sb.equals(aux)){
						return 1;}
				}
			}
		}
		return res;
	}
	
	public static int count(int a){
		int res = 0;
		while(a!=0){
			a=a/10;
			res++;
		}
		return res;
	}
}
