package codejam;

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

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("in.txt"));
		PrintWriter out = new PrintWriter(new File("out.txt"));
		
		int T = Integer.parseInt(in.readLine());
		for (int t = 1; t <= T; ++t) {
			String[] parts = in.readLine().split("[ ]+");
			int A = Integer.parseInt(parts[0]);
			int B = Integer.parseInt(parts[1]);
			
			int cnt = 0;
			for (int i = A; i < B; ++i) {
				String str = String.valueOf(i);
				int n = str.length();
				String res = "";
				Set<Integer> seen = new HashSet<Integer>();
				for (int j = n - 1; j > 0; --j) {
					res = str.substring(j) + str.substring(0, j);
					int k = Integer.parseInt(res);
					if (k > i && k <= B) {
						//System.out.println("(" + i + ", " + k + ")");
						if (!seen.contains(k)) {
							++cnt;
							seen.add(k);
						}
					}
				}
			}

			out.println("Case #" + t + ": " + cnt);
		}
		
		in.close();
		out.close();
		System.exit(0);
	}
}

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

public class Pair {
  public static int a, b, l;
  public static boolean inr(String x) {
    int t = Integer.parseInt(x);
    if ((t + "").length() != l) return false;
    if (t <= b && t >= a) {
      return true;
    }
    else return false;
  }
  
  public static String toS(int x) {
    String o = "";
    return o+x;
  }
  
  public static boolean notInT(String[] t, String x, int c) {
    for (int i = 0; i < c; i++) if (t[i].equals(x)) return false;
    return true;
  }
  
  public static int recycle(String s) {
    int count = 0;
    String[] t = new String[l];
    int c = 1;
    t[0] = s;
    for (int i = 0; i < l - 1; i++) {
      String a = s.substring(0, i + 1);
      String b = s.substring(i + 1, l);
      if (notInT(t, b + a, c)) {
        t[c] = b + a;
        c++;
      }
    }
    for (int i = 1; i < c; i++) {
      if (inr(t[i])) count++;
    }
    return count;
  }
  
  public static void main(String args[]) throws IOException {
    int count;
    Scanner in = new Scanner(new File("e:/in.txt"));
    PrintStream out = new PrintStream(new File("e:/out.txt"));
    int n = in.nextInt();
    for (int z = 1; z <= n; z++) {
        count = 0;
        a = in.nextInt();
        b = in.nextInt();
        l = (b + "").length();
        for (int i = a; i <= b; i++) {
          count += recycle(toS(i));
        }
        count /= 2;
        out.println("Case #"+z+": "+count);
    }
  }
}

