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

public class QualC{		
		
		private BufferedReader in;	
		private StringTokenizer st;
		private PrintWriter out;
		
		void solve() throws IOException{
			
			int kases = nextInt();
			int kase = 0;
			while(kases-->0){
				kase++;
				out.print("Case #"+kase+": ");
				int a = nextInt();
				int b = nextInt();
				int ans = 0;
				for (int n = a; n <= b; n++) {
					for (int m = n+1; m <= b; m++) {
						String x = n+"";
						String y = m+"";
						if(x.length() != y.length()) continue;
						String z = x+x;
						if(z.contains(y)) ans++;
					}
				}
				out.println(ans);
				
			}
		}
			

		QualC() throws IOException {
			in = new BufferedReader(new FileReader("input.txt"));	
			out = new PrintWriter(new FileWriter("output.txt"));
			eat("");
			solve();	
			out.close();
		}

		private void eat(String str) {
			st = new StringTokenizer(str);
		}

		String next() throws IOException {
			while (!st.hasMoreTokens()) {
				String line = in.readLine();
				if (line == null) {
					return null;
				}
				eat(line);
			}
			return st.nextToken();
		}

		int nextInt() throws IOException {
			return Integer.parseInt(next());
		}

		long nextLong() throws IOException {
			return Long.parseLong(next());
		}

		double nextDouble() throws IOException {
			return Double.parseDouble(next());
		}

		public static void main(String[] args) throws IOException {
			new QualC();
		}

		int gcd(int a,int b){
			if(b>a) return gcd(b,a);
			if(b==0) return a;
			return gcd(b,a%b);
		}

}
