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.HashMap;
import java.util.Scanner;


public class Recycle {
    
    private static HashMap<Pair2, Boolean> mCache = new HashMap<Pair2, Boolean>();
    
    public static boolean isRecycle(int a, int b) {
        if (a >= b) return false;
        Pair2 p = new Pair2(a, b);
        Boolean cacheValue = mCache.get(p);
        if (cacheValue != null) return cacheValue;
        
        //System.out.println("isRecycle(" + a + ", " + b + ")");
        
        int len = (int)Math.floor(Math.log10(b));
        for (int i = 0; i < len; i++) {
            b = b / 10 + (b % 10) * pow10(len);
            //System.out.println(b);
            if (a == b) {
                mCache.put(p, true);
                return true;
            }
        }
        
        mCache.put(p, false);
        return false;
    }
    
    public static int pow10(int pow) {
        int ret = 1;
        for (int i = 0; i < pow; i++) {
            ret *= 10;
        }
        return ret;
    }
    
    public static int countRecycle(int start, int end) {
        int count = 0;
        for (int i = start; i <= end; i++) {
            for (int j = i; j <= end; j++) {
                if (isRecycle(i, j)) {
                    count++;
                }
            }
        }
        return count;
    }
    
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int num = in.nextInt();
        
        for (int i = 0; i < num; i ++) {
            int a = in.nextInt();
            int b = in.nextInt();
            System.out.println("Case #" + (i + 1) + ": " + countRecycle(a, b));
        }
    }
}
