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.File;
import java.util.HashMap;
import java.util.Scanner;


public class ProblemC {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception {
		
		Scanner leitor = new Scanner(new File("problemC.in"));
		int n = leitor.nextInt(); leitor.nextLine();
		for (int caso = 0 ; caso < n; caso++) {
			int a = leitor.nextInt();
			int b = leitor.nextInt();
			leitor.nextLine();
			/* A â¤ n < m â¤ B. */
			if (b > 10) { 
				int resultado[] = new int[b+1];
				for (int i = 0; i < 11; i++) {
					resultado[i] = 0;
				}
				for (int i = a; i <= b; i++) {
					String number = Integer.toString(i);
					int resultadoParcial = resultado[i-1];
					String numberToChange = Integer.toString(i);
					HashMap<Integer, Integer> tiraRepetidos = new HashMap<Integer, Integer>();
					for (int j = 0; j < number.length()-1; j++) {
						String novoNumeroString = numberToChange.substring(j+1) + numberToChange.substring(0,j+1);
						while (novoNumeroString.startsWith("0")) novoNumeroString = novoNumeroString.substring(1);
						int novoNumero = new Integer( novoNumeroString);
						//System.out.println(i + " -> " + novoNumero);
						if (!tiraRepetidos.containsKey(novoNumero)) {
							if ((a <= i ) && 
							(i < novoNumero) && (novoNumero <= b)) {
								resultadoParcial += 1;
							}
							tiraRepetidos.put(novoNumero, novoNumero);
						}
					}
					resultado[i] = resultadoParcial;	
				}
				System.out.println("Case #"+ (caso+1) + ": " + (resultado[b])); 
			} else {
				System.out.println("Case #"+ (caso+1) + ": 0"); 

			}

		}
	}

}
