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.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.BitSet;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class B {
  
  
  public static void main(String[]args)throws Exception {
    File f = new File(args[0]);
    File out = new File(f.getParentFile(), f.getName()+".out");
    BufferedWriter w = new BufferedWriter(new FileWriter(out));
    Scanner s = new Scanner(f);
    int T = s.nextInt();
    s.nextLine();
    for (int t=1;t<=T;t++) {
      int A = s.nextInt();
      int B = s.nextInt();
      println(w, "Case #"+t+": "+solve(A,B));
      s.nextLine();
    }
    s.close();
    w.close();
  }
  
  private static String solve(int A, int B) {
    int num = 0;
    Set<String> set = new HashSet<String>();
    for (int i=A; i<=B; i++) {
      int[] check = check(i);
      for (int j = 0; j < check.length; j++) {
        if (check[j] <= i) continue;
        if (check[j] >i && check[j] <=B)
          set.add(i+":"+check[j]);
      }
    }
    return ""+set.size();
  }
  static int[] check(int i) {
    String s = String.valueOf(i);
    int[] ret = new int[s.length()-1];
    for (int x=0;x<s.length()-1;x++) {
      s = s.charAt(s.length() - 1) + s.substring(0, s.length()-1);
      if (s.charAt(0)=='0')continue;
      ret[x] = Integer.parseInt(s);
    }
    return ret;
  }

  static void println(BufferedWriter w, String s) throws IOException {
    System.out.println(s);
    w.write(s+"\n");
  }
}
