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 Main {
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[][] s = new int[3][n];

		for (int i = 0; i < n; i++) {
			s[0][i] = sc.nextInt();
			s[1][i] = sc.nextInt();
			s[2][i] = 0;
		}

		for (int i = 0; i < n; i++) {
			List<Integer> past2 = new ArrayList<Integer>();
			List<Integer> past1 = new ArrayList<Integer>();
			if (s[0][i] < 10 && s[1][i] < 10) {
				s[2][i] = 0;
			} else {
				for (int j = s[0][i]; j < s[1][i]; j++) {
					String t1 = Integer.toString(j); // mÀ» ¹®ÀÚ¿­·Î ÀúÀå
					for (int k = 1; k < t1.length(); k++) {
						String t2 = t1.substring(k) + t1.substring(0, k); // nÀ» ¹®ÀÚ¿­·Î ÀúÀå
						if (t2.charAt(0) != '0') { // Ã¹ÀÚ¸®°¡ 0ÀÌ µÇ¾î ÀÚ¸®¼ö°¡ ³»·Á°¡´Â °æ¿ì ¿¹¿Ü Ã³¸®
							if (Integer.parseInt(t2) <= s[1][i] && Integer.parseInt(t2) >= s[0][i]) { // B ¹üÀ§¸¦ ÃÊ°úÇÏ´Â °æ¿ì ¿¹¿Ü Ã³¸®
								if (!t1.equals(t2)) { // n°ú mÀÌ °°Àº °æ¿ì ¿¹¿Ü Ã³¸®
									int same = 0;
									for(int p = 0; p < past2.size() ; p++) {
										if(past2.get(p) == Integer.parseInt(t1) && past1.get(p) == Integer.parseInt(t2)) {
											same = 1;
										}
									}
									if(same == 0) {
										s[2][i]++;
										past2.add(Integer.parseInt(t2));
										past1.add(Integer.parseInt(t1));
									}
									same = 0;
								}
							}
						}
					}
				}
			}
		}

		for (int i = 0; i < n; i++) {
			System.out.println("Case #" + (i + 1) + ": " + s[2][i]);
		}

	}
}