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.util.*;
import java.util.regex.*;
import java.text.*;
import java.math.*;
import java.awt.geom.*;
import java.io.*;

public class cx{
	public static void main(String[] args){
		try{			
			File output;
			FileWriter outputwriter;
			BufferedWriter out;
			String filename = "bx.out";
			
			output = new File(filename);
			outputwriter = new FileWriter(output);
			out = new BufferedWriter(outputwriter);
			
			//System.out.println("siap");
			//out.write("ardhianvv\nll");
			BufferedReader f = new BufferedReader(new FileReader("a.in"));
			StringTokenizer st = new StringTokenizer(f.readLine());			
			int angka = Integer.parseInt(st.nextToken());
			for(int a=0;a<angka;a++){
				st = new StringTokenizer(f.readLine());
				String hh[] = st.nextToken("\n").split(" ");
				int aa = Integer.parseInt(hh[0]);
				int bb = Integer.parseInt(hh[1]);
				int hasil =0;
				HashSet<String>jkl = new HashSet<String>();
				for(int b=aa;b<=bb;b++){
					String as = ""+b;
					//if(a==3)
					//System.out.println("- "+as);
					int len = as.length();					
					for(int c=0;c<as.length()-1;c++){
						if(as.charAt(len-1-c)<as.charAt(0)){
							continue;
						}
						int gg = Integer.parseInt(""+as.substring(len-1-c,len)+as.substring(0,len-1-c));						
						if(gg>b && gg<=bb){
							//if(a==3)
								//System.out.println((hasil+1)+ " "+b+" "+gg);
							jkl.add(b+" "+gg);
							//hasil++;
						}
					}
				}
				//System.out.println(jkl.size());
				if(a!=angka-1)					
					out.write("Case #"+(a+1)+": "+jkl.size()+"\n");
				else
					out.write("Case #"+(a+1)+": "+jkl.size());
			}
			out.close();
		} catch(Exception cc){
			System.out.println(cc.toString());
		}
	}
}