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

import java.io.File;
import java.io.FileInputStream;
import java.util.Scanner;

/**
 *
 * @author imgps
 */
public class C {
    public static void main(String args[]) throws Exception{
        int A,B;
        int ctr = 0;
        int testCases;
        
        Scanner sc = new Scanner(new FileInputStream("C-small-attempt0.in "));
        testCases = sc.nextInt();
        int input[][] = new int[testCases][2];
        for(int i=0;i<testCases;i++)
        {
          //  System.out.print("Enter input A B: ");
            input[i][0] = sc.nextInt();
            input[i][1] = sc.nextInt();
            
        }
  

for(int k=0;k<testCases;k++){
      ctr = 0;
      A = input[k][0];
      B = input[k][1];
        for(int i = A;i<=B;i++){
            int num = i;
            int nMul = 1;
            int mul = 1; 
            int tnum = num/10;
            while(tnum > 0){
                mul = mul *10;
                tnum= tnum/10;
            }
            tnum = num;
            int n = 0;
            while(tnum > 0 && mul >= 10){
                nMul = nMul * 10;
                n = (num % nMul) * mul + (num / nMul);
                mul = mul / 10;
                tnum = tnum / 10;
                for(int m=num;m<=B;m++){
                    
                    if(n == m && m > num){
                        ctr++;
                    }
                }
                
                
                
         
            }
        }
        System.out.println("Case #"+(k+1)+": "+ctr);
        
    }
    }
}

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

public class C {
  
  static final int maxn = 2000010;
  static int A, B;
  static boolean was[] = new boolean[maxn];
  static long ans;

  static void examine(int x) {
    String s = "" + x;
    int n = s.length();

    int num = 1;
    was[x] = true;
    for (int i = 1; i < n; i++) {
      s = s.substring(1) + s.charAt(0);
      if (s.charAt(0) == '0') continue;

      int y = Integer.parseInt(s);
      if (was[y]) break;
      if (y >= A && y <= B) {
        was[y] = true;
        num++;
      }
    }

    ans += num * (num - 1) / 2;
  }

  public static void main(String[] args) {
    Scanner in = new Scanner(new InputStreamReader(System.in));
    int T = in.nextInt();
    for (int q = 1; q <= T; q++) {
      Arrays.fill(was, false);
      ans = 0;
      A = in.nextInt(); B = in.nextInt();
      for (int i = A; i <= B; i++) {
        if (was[i]) continue;
        examine(i);
      }
      System.out.printf("Case #%d: %d\n", q, ans);
    }
  }
}
