import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;


public class Main {

//	static int MAX = 10000;
	static int MAX = 2000000;
	static Object[] All = new Object[MAX+1];
	
	static int size( int x ) {
		if(x>999999) return 7;
		if(x>99999)  return 6;
		if(x>9999)   return 5;
		if(x>999)    return 4;
		if(x>99)     return 3;
		if(x>9)      return 2;
		return 1;
	}
	static int[] rotate( int value ) {
		List<Integer> result = new ArrayList<Integer>();
		int[] V = new int[8];
		int s = size(value);
		int x = value;
		
		for(int i=s-1;i>=0;i--) {
			V[i] = x%10;
			x /=10;
		}
		int rot;
		for(int i=1; i<s; i++) {
			if(V[i]!=0){
				rot=0;
				for(int j=0,ii=i;j<s; j++,ii=(ii+1)%s){
					rot=rot*10+V[ii];
				}
				if(rot>value && !result.contains(rot))
					result.add(rot);
			}
		}
		if( result.isEmpty() )
			return null;
		int[] r = new int[result.size()];
		for(int i=0; i<r.length; i++)
			r[i]=result.get(i);
		return r;
	}
	
	static void precalculate() {
		for(int i=1; i<=MAX; i++){
			All[i] = rotate(i);
		}
	}
	static int solve( Scanner in ) {
		int A, B, sol=0;
		
		A = in.nextInt();
		B = in.nextInt();

		for( int i=A; i<=B; i++) {
//			List<Integer> result = rotate(i);
			if( All[i]!=null ) {
				for(int value: (int[])All[i] ) {
					if( value <= B )
						sol++;
				}
			}
		}

		return sol;
	}
	
	public static void main ( String args[] ) {
		int T; 
		Scanner in = new Scanner(System.in);
		T = in.nextInt();
		int cnt=0;
		int sol;
		precalculate();
		for( cnt=1; cnt<=T; cnt++ ) {
			sol = solve( in );
			System.out.printf("Case #%d: %d\n", cnt, sol);
		}

	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package probc;

import java.io.*;
import java.util.Scanner;
import javax.swing.JOptionPane;

/**
 *
 * @author nick
 */
public class ProbC {

    public static int numLines = 0;
    public static String[] dataLine;
    public static String[] outLine;

    public static void main(String[] args) throws UnsupportedEncodingException, IOException {

        // input

        //JOptionPane.showMessageDialog(null, "This program provides a decrypter for Google's third CodeJam question: Recycled Numbers.");

        getInput();

        decode();

        writeOutput();

    }

    private static void getInput() throws FileNotFoundException {
        Scanner scanner = new Scanner(new FileInputStream("input.txt"));
        try {
            numLines = Integer.parseInt(scanner.nextLine());
            dataLine = new String[numLines];
            outLine = new String[numLines];
            for (int i = 0; i < numLines; i++) {
                dataLine[i] = scanner.nextLine();
            }
        } finally {
            scanner.close();
        }
    }

    private static void writeOutput() throws UnsupportedEncodingException, FileNotFoundException, IOException {
        Writer out = new OutputStreamWriter(new FileOutputStream("output.txt"));
        try {
            String outText = "";
            for (int i = 0; i < numLines; i++) {
                outText = outText + outLine[i] + "\n";
            }
            out.write(outText);
        } finally {
            out.close();
        }
    }

    private static void decode() {

        for (int i = 0; i < numLines; i++) {


            Scanner sc = new Scanner(dataLine[i]);
            String numOneString = sc.next();
            String numTwoString = sc.next();
            sc.close();
            int numOneInt = Integer.parseInt(numOneString);
            int numTwoInt = Integer.parseInt(numTwoString);
            int length = numOneString.length();
            int setLength = numTwoInt - numOneInt;
            String tempString = "";
            int tempInt = 0;

            int answer = 0;

            int[] answers = new int[numTwoInt];


            tempInt = numOneInt;


            for (int ii = 0; ii < setLength; ii++) {

                tempString = "" + tempInt;


                for (int iii = 0; iii < length; iii++) {


                    tempString = tempString.substring(1) + tempString.charAt(0);


                    if (Integer.parseInt(tempString) >= tempInt & Integer.parseInt(tempString) <= numTwoInt) {
                        if (Integer.parseInt(tempString) != tempInt) {
                            
                            answer++;

                        }
                    }
                }

                tempInt++;
            }

            outLine[i] = "Case #" + (i + 1) + ": " + answer;

        }

    }
}
