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.PrintWriter;
import java.util.ArrayList;
import java.util.Scanner;


public class recycle {
	static Scanner kb ;
	public static void main(String[] args) throws FileNotFoundException {
		// TODO Auto-generated method stub
PrintWriter out = new PrintWriter("answerrecycle.txt");
		 kb = new Scanner(System.in);
		int testcase = kb.nextInt();
		for(int i=0;i<testcase;i++){
			out.println("Case #"+(i+1)+": "+solve());
		}
		out.close();
	}
	private static int solve() {
		// TODO Auto-generated method stub
		
		int minnumber = kb.nextInt();
		int maxnumber = kb.nextInt();
		int answer = 0;
		for(int i=minnumber;i<=maxnumber;i++){
			ArrayList<Integer> mem = new ArrayList<Integer>();
			String number = Integer.toString(i);
			int s = (int)number.charAt(0)-48;
			for(int k=1;k<number.length();k++){
			int n = (int)number.charAt(k)-48;
			
			if(n>=s){
				
				String news =  number.substring(k,number.length())+number.substring(0,k);
				int numbernew = Integer.parseInt(news);
				if(numbernew<=maxnumber&&(!(numbernew<=i))&&news.length()==number.length()&&!mem.contains(numbernew)){
					answer++;
					//System.out.println(number+"_n>s_"+news);
					mem.add(numbernew);
				}
				
			}
			
		}
		
	}
		return answer;
	}
}
