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.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumber {

	/**
	 * @param args
	 * @throws IOException
	 * @throws NumberFormatException
	 */
	public static void main(String[] args) throws NumberFormatException,
			IOException {
		// TODO Auto-generated method stub

		FileInputStream fstream = new FileInputStream("C:\\input.txt");
		DataInputStream in = new DataInputStream(fstream);
		BufferedReader br = new BufferedReader(new InputStreamReader(in));

		int cases = Integer.parseInt(br.readLine());
		String mainOutput = "";

		for (int c = 0; c < cases; c++) {

			StringTokenizer stringTokenizer = new StringTokenizer(br.readLine());

			int a = Integer.parseInt(stringTokenizer.nextToken());
			int b = Integer.parseInt(stringTokenizer.nextToken());
			
			int finalCount = 0;

			int arr[] = new int[b * 2];
			int arr2[] = new int[b * 2];

			for (int n = a; n < b; n++) {

				int TEN = 10;
				int count = Integer.toString(n).length();
				for (int i = 1; i < count; i++) {
					int m = (int) ((n % Math.pow(TEN, i)) * Math.pow(TEN, count
							- i))
							+ (int) (n / Math.pow(TEN, i));
					if (a <= n && n < m && m <= b) {
						// System.out.println(n + " " + m);
						arr[finalCount] = m;
						arr2[finalCount++] = n;
					}
				}
			}
			int count = 0;
			for (int i = 1; i < finalCount; i++) {
				if ((arr2[i] == arr2[i + 1] && arr[i] == arr[i + 1])
						|| (arr2[i - 1] == arr2[i] && arr[i - 1] == arr[i])) {
					count++;
				}
			}
			mainOutput = mainOutput + "Case #"+(c+1)+": "+(finalCount - (count / 2))+"\n";			
		}
		BufferedWriter bw = new BufferedWriter(new FileWriter(new File(
        "C:\\output.txt"), true));
		
		bw.write(mainOutput);
		bw.close();
		
		
		in.close();
	}

}
