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.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class GoogleReplaced {
    static BufferedWriter bw = null;

    public static void main(String[] args) throws Exception {
        try {
            Scanner sc = new Scanner(new File("C-small-attempt.in"));
            bw = new BufferedWriter(new FileWriter("output.txt"));
            long totalCases = sc.nextLong();
            for (int i = 1; i <= totalCases; i++) {
                int finalCount = 0;
                int i1 = sc.nextInt();
                int i2 = sc.nextInt();
                int tempNum1 = i1;
                for (; tempNum1 <= i2; tempNum1++) {
                    String string = String.valueOf(tempNum1);
                    List usedList = new ArrayList();
                    for (int j = 1; j < string.length(); j++) {
                        String string1 = string.substring(string.length() - j, string
                                .length());
                        String string2 = string.substring(0, string.length() - j);
                        String newString = string1 + string2;
                        int newIntValue = Integer.parseInt(newString);

                        if ((i1 <= newIntValue) && ((i2 >= newIntValue))) {
                            if (newIntValue > tempNum1) {
                                if (!usedList.contains(newIntValue)) {
                                    usedList.add(newIntValue);
                                    finalCount = finalCount + 1;
                                }
                            }
                        }
                    }
                }
                bw.append("Case #" + i + ": ");
                bw.append(String.valueOf(finalCount));
                bw.append("\n");
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            bw.flush();
            bw.close();
        }
    }
}
