/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package year_2012.qualification;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Set;

/**
 *
 * @author paul
 * @date 14 Apr 2012
 */
public class QuestionC {

    private static Set<Integer> getCycle(int x) {

        String s = Integer.toString(x);
        Set<Integer> set = new HashSet<Integer>();
        set.add(x);
        for (int c = 1; c < s.length(); c++) {
            String t = s.substring(c).concat(s.substring(0, c));
            set.add(Integer.parseInt(t));
        }
        return set;
        
    }

    private static Set<Integer> mask(Set<Integer> set, int a, int b) {
        Set<Integer> result = new HashSet<Integer>();

        for (int x : set) {
            if (x >= a && x <= b) {
                result.add(x);
            }
        }
        
        return result;

    }


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

        String question = "C";

//        String name = "large";
        String name = "small-attempt0";
//        String name = "test";

        String filename = String.format("%s-%s", question, name);

        BufferedReader input = new BufferedReader(
                new FileReader(String.format("/home/paul/Documents/code-jam/2012/qualification/%s.in",
                filename)));

        String firstLine = input.readLine();

        PrintWriter pw = new PrintWriter(new File(
                String.format("/home/paul/Documents/code-jam/2012/qualification/%s.out", filename)));


        int T = Integer.parseInt(firstLine);

        // Loop through test cases.
        for (int i = 0; i < T; i++) {

//             Read data.
            String[] tokens = input.readLine().split(" ");

//            int N = Integer.parseInt(input.readLine());

            int A = Integer.parseInt(tokens[0]);
            int B = Integer.parseInt(tokens[1]);

//            System.out.format("%d, %d\n", A, B);

            boolean[] used = new boolean[B+1];
            int total = 0;
            for (int n = A; n <= B; n++) {
                if (!used[n]) {
                    Set<Integer> set = mask(getCycle(n), A, B);
                    int k = set.size();
                    total += (k * (k-1))/2;
                    for (int m : set) {
                        used[m] = true;
                    }
                }
            }

            pw.format("Case #%d: %d\n", i + 1, total);
        }

        pw.close();

    }

}

import java.util.*;
 import java.io.*;
 import java.math.BigDecimal;
import java.math.BigInteger;




public class Main {

    
	
    private void solve() throws Exception {
    	int test = in.nextInt();
    	for(int t=1; t <= test; ++t) {
    		solveTest(t);
    		out.println();
    	}
    }
	private void solveTest(int testNum) {
		int a=in.nextInt();
		int b=in.nextInt();
		int ans = 0;
		int[] used = new int[10000000];
		int T=1;
		for(int n=a; n <= b; ++n) {
			String str=Integer.toString(n);
			++T;
			for(int shift=0; shift < str.length(); ++shift) {
				str = str.substring(1) + str.charAt(0);
				if (str.charAt(0) == '0')
					continue;
				int m = Integer.parseInt(str);
				if (m < a || m > b || m <= n || used[m] == T)
					continue;
				used[m] = T;
				//out.println(n + " " + m);
				++ans;
			}
		}
		out.print("Case #" + testNum + ": " + ans);
		
	}
	private void run() {
        try {
            long start = System.currentTimeMillis();
            in = new FastScanner("input.txt", "output.txt");
            solve();
            out.flush();
            System.err.print("running time = " + (System.currentTimeMillis() - start) * 1e-3);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    
    public static void main(String[] args) {
        Main main = new Main();
        main.run();
    }
    FastScanner in;
    static PrintWriter out;
    static class FastScanner {
        public BufferedReader reader;
        private StringTokenizer tokenizer;
        public FastScanner(String input, String output) {
            try {
                reader = new BufferedReader(new FileReader(new File(input)));
                out = new PrintWriter(new File(output));
                tokenizer = null;
            } catch (Exception e) {
                reader = new BufferedReader(new InputStreamReader(System.in));
                out = new PrintWriter(System.out);
                tokenizer = null;
            }
        }
        public double nextDouble() {
            return Double.parseDouble(nextToken());
        }
        public String nextToken() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            return tokenizer.nextToken();
        }
        int nextInt() {
            return Integer.parseInt(nextToken());
        }
        long nextLong() {
            return Long.parseLong(nextToken());
        }
    }
 }