import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
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_small {
	

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

		BufferedReader in = new BufferedReader(new FileReader("C-small-attempt0.in"));
		BufferedWriter out = new BufferedWriter(new FileWriter("C-small-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;
			 int lasta=0,lastb=0;
			 
			 int a = Integer.parseInt(val[0]);
			 int b = Integer.parseInt(val[1]);
			 
			 for(int j=a; j<b; j++){ 
				 
//				 if(i < 4)break;
				 String g = Integer.toString(j);
				 
				 for(int k=g.length()-1; k>0; k--){
					 int r = switchIt(g, k);
					 if(r > j && r <= b && r != j){
						 
						 if(lasta == j && lastb == r) continue;
						 lasta = j;
						 lastb = r;
						 count++;

					 }
				 }
				 
			 }
			 out.write("Case #"+ i +": " + count);
			 out.newLine();
			 
			 
		 }
		 
		
		in.close();
		out.close();
		
		
		

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