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.*;
import java.util.*;

public class C {
	public static void main(String[] args) throws Exception{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		
		
		Scanner sc = new Scanner(br.readLine());
		int T = sc.nextInt();
		int caseNumber = 1;
		
		
		for(int i=0; i<T; i++){
			sc = new Scanner(br.readLine());
			int A = sc.nextInt();
			int B = sc.nextInt();
			
			int n = A;
			int m = A;
			int count = 0;
			
			
			for(int j=A; j<B; j++){
				n = j;
				
				for(int k=j; k<B; k++){
					m = k+1;
					
					String sn = ""+n;
					String sm = ""+m;
					if(n<m && !sn.equals(sm)){
						for(int l=1; l<sn.length(); l++){
							String smt = sm.substring(l) + sm.substring(0, l);
							if(Integer.parseInt(smt) == n){
								//System.out.println("sn="+sn + "    sm="+ sm);
								count++;
							}
						}
					}
				}
			}
			
			
			
			System.out.println("Case #"+caseNumber+": "+ count);
			caseNumber++;
		}
		
	}
}