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

public class Recycle {

	private static HashMap<Integer, HashSet<Integer>> map = new HashMap<Integer, HashSet<Integer>>();
	private static HashSet<Integer> toSkip = new HashSet<Integer>();
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner reader = new Scanner(System.in);
		int T = reader.nextInt();
		for (int tc = 1; tc <= T; tc++) {
			int a = reader.nextInt();
			int b = reader.nextInt();
			long before = System.currentTimeMillis();
			int res = doit(a, b);
			System.out.printf("Case #%d: %d\n", tc, res);
			long after = System.currentTimeMillis();
//			System.out.println("time taken: " + (after - before));
		}
	}

	private static int doit(int a, int b) {
		int count = 0;
		HashSet<Integer> skip = new HashSet<Integer>(toSkip);
		for (int i = a; i <= b; i++) {
			if (skip.contains(i))
				continue;
			HashSet<Integer> arr = generate(i);
//			if(arr.size() > 1) {
//				map.put(i, arr);
//			}
			// System.out.println(i + " --> " +
			// Arrays.deepToString(arr.toArray()));
			int temp = 0;
			if (arr.size() > 1) {
				for (int x : arr) {
					if (x >= a && x <= b) {
						temp++;
						skip.add(x);
					}
				}
				count += temp * (temp - 1) / 2;
			}
//			System.out.println("not skipping " + i + " gen: " + arr.size()+ " " + (temp * (temp - 1) / 2));
		}
		return count;
	}

	private static HashSet<Integer> generate(int num) {
		if(map.containsKey(num)) {
			HashSet<Integer> list = map.get(num);
			return list;
		}
		HashSet<Integer> list = new HashSet<Integer>();
		String s = "" + num;
		list.add(num);
		int len = s.length();
		for (int i = 1; i < len; i++) {
			String temp = s.substring(i) + s.substring(0, i);
			// System.out.println("temp: " + temp);
			if (temp.charAt(0) == '0')
				continue;
			int x = Integer.parseInt(temp);
			if( x <= 2000000) {
				list.add(x);
			}
		}
		if(list.size() > 1) {
			map.put(num, list);
		} else {
			toSkip.add(num);
		}
		return list;
	}

}

import java.util.*;
import java.io.*;


public class C {
	public static final String INPUT_FILE = "C-small-attempt0.in";
	public static final String OUTPUT_FILE = "c1.out";

	public static void main(String[] args) throws FileNotFoundException {
		
		Scanner input = new Scanner(new File(INPUT_FILE));
		PrintStream output = new PrintStream(new File(OUTPUT_FILE));
		
		Map<Integer, Integer> answerKey = new HashMap<Integer, Integer>();
		answerKey.put(1,0);
		answerKey.put(2,1);
		answerKey.put(3,3);
		answerKey.put(4,6);
		answerKey.put(5,10);
		answerKey.put(6,15);
		answerKey.put(7,21);
		
		
		int trials = Integer.parseInt(input.nextLine());


		// START
		for(int i = 1; i <= trials; i++) {
			String[] line = input.nextLine().split(" ");
			int A = Integer.parseInt(line[0]); 
			int B = Integer.parseInt(line[1]);
			
			Set<Integer> seen = new HashSet<Integer>();
			List<Integer> answer = new ArrayList<Integer>();
			
			int length = getLength(A);
			
			if(length > 1) {
				for(int j = A; j <= B; j++) {
					
					if(!seen.contains(j)) {
					
						answer.add(numberOfPerms(A, B, j, length, seen));
					
					} // It is seen, so don't do anything
				}			
			} else { // length = 1			
			}			
			
			int answerCount = 0;
			for(int k = 0; k < answer.size(); k++) {
				answerCount += answerKey.get(answer.get(k));
			}
			
			output.print("Case #" + i + ": " + answerCount);
			if(i != trials) {
				output.println();
			}
	
		}
		
	}
	
	public static int numberOfPerms(int A, int B, int num, int length, Set<Integer> s) {
		int original = num;
		int count = 1;
		int permute = permute(num, length);
		s.add(original);
		while(original != permute) {
	
			if(permute >= A && permute <= B && !s.contains(permute)) {
				s.add(permute); // add bc we've now seen it
				count++;        // we have a good permute
			}
			
			permute = permute(permute, length);	
		}
		return count;
	}


	public static int getLength(int num) {
		return (num + "").length();

	}

	public static int permute(int num, int length) {
		int a = num % 10;
		int b = num / 10;
		return a * (int) Math.pow(10, length-1) + b;		
	}
	
}