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 RecycledNumbers {

	public static void main(String[] args) {
		
		System.out.println("Enter case input:");
		
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		sc.nextLine();
		
		int[][] numbers = new int[T][2];
		for (int t = 0; t < T; t++) {
			numbers[t][0] = sc.nextInt();
			numbers[t][1] = sc.nextInt();
			sc.nextLine();
		}
		
		for (int t = 1; t <= T; t++) {
			int a = numbers[t - 1][0];
			int b = numbers[t - 1][1];
			int numRecycledPairs = 0;
			
			for (int n = a; n < b; n++) {
				String N = n + "";
				int[] matches = new int[N.length()];
				boolean duplicate = false;
				
				for (int digitFromBack = 1; digitFromBack <= N.length() - 1; digitFromBack++) {
					int newInt = Integer.parseInt(N.substring(N.length() - digitFromBack) + N.substring(0, N.length() - digitFromBack));
					if (newInt > n && newInt <= b) {
						for (int match : matches) {
							if (newInt == match)
								duplicate = true;
						}
						//System.out.print(n + ":" + newInt + " ");
						if (!duplicate) {
							matches[digitFromBack] = newInt;
							numRecycledPairs++;
						}
					}
				}
			}
			
			System.out.println("Case #" + t + ": " + numRecycledPairs);
		}
		
		

	}

}
