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.util.*;
public class b {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		Scanner sc = new Scanner(System.in);
		String ss = sc.nextLine();
		int casenum = Integer.parseInt(ss);
		String answer = "";
		for(int i = 1;i<=casenum;i++){
			answer = answer.concat("Case #".concat(Integer.toString(i)).concat(": "));
			ss = sc.nextLine();
			String wer = recycledpair(ss);
			answer = answer.concat(wer);
			answer = answer.concat("\n");
		}
		System.out.print(answer);
	}
	
	public static String recycledpair(String a){
		int n = Integer.parseInt(a.substring(0, a.indexOf(' ')));
		int m = Integer.parseInt(a.substring(a.indexOf(' ')+1, a.length()));
		int nlength = a.substring(0, a.indexOf(' ')).length();
		int pairnum = 0;
		String rcp ="";
		for(int i=n; i<m; i++){
			LinkedList<Integer> mylist = new LinkedList<Integer>();
			String sn = Integer.toString(i);
				//a.substring(0, a.indexOf(' '));
			for(int j=1; j<sn.length(); j++){
				String newnum = sn.substring(j,sn.length()).concat(sn.substring(0,j));
				int newint = Integer.parseInt(newnum);
				if(newint>i&&newint<=m){
					if(!mylist.contains(newint)){
					pairnum++;
					mylist.add(newint);
					}
					else{
						mylist.add(newint);
					}
				}
			}
		}
		String snumreturn = Integer.toString(pairnum);
		//System.out.print(snumreturn);
		return snumreturn;
	}
}
