import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;

/**
 * 
 * @author ysan
 *
 */

public class Problem_C_large {
	

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

		BufferedReader in = new BufferedReader(new FileReader("C-large.in"));
		BufferedWriter out = new BufferedWriter(new FileWriter("C-large-output0.txt"));
		
		int cases = Integer.parseInt(in.readLine());
		
		 for (int i = 1; i <= cases; i++) {
			 String text = in.readLine().trim();
			 String[] val = text.split(" ");
			 int count = 0;
			 BigInteger lasta = BigInteger.ZERO;
			 BigInteger lastb = BigInteger.ZERO;
			 
			 BigInteger a = new BigInteger(val[0]);
			 BigInteger b = new BigInteger(val[1]);
			 
			 System.out.println(a +" "+b);
			 BigInteger j = a;
			 while(j.compareTo(b) < 0){ 

				 String g = j.toString();
				
				 for(int k=g.length()-1; k>0; k--){
					 BigInteger r = switchIt(g, k);
					 if(r.compareTo(j) > 0 && r.compareTo(b) <= 0 ){
						 System.out.println(" r "+r+" j "+j);
						 if(lasta == j && lastb == r) continue;
						 lasta = j;
						 lastb = r;
						 count++;

					 }
				 }
				 j = j.add(BigInteger.ONE);
			 }
			 out.write("Case #"+ i +": " + count);
			 out.newLine();
		 }
		 
		
		in.close();
		out.close();
		
		
		

	}
	
	
	static BigInteger switchIt(String v, int p){
		BigInteger r= BigInteger.ZERO;
		
		String a = v.substring(p);
		String b = v.substring(0, p);
		
		if(a.charAt(0) != '0'){
			r = new BigInteger(a+b);
		}
		return r;
		
	}
}
