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.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class recycled {
	
	static int f_recycled(String s_min,String s_max){
		  int num_recycled=0;
		  int min=Integer.parseInt(s_min);
		  int max=Integer.parseInt(s_max);
		  
		  //System.out.println("______________________________________\nNúmeros reciclados entre "+s_min+" y "+s_max);
		  
		  if (max>10){

			  int cab_max=s_max.charAt(0);
			  int cab_min, num;
			  String string_v;
			  int i, j, final_v;
			  String string_final_v;
			  
			  List<Integer> soluciones_valor=new ArrayList<Integer>();
			  boolean enc;
			  
			  int v=min;
			  while(v<=max){
				  string_v=String.valueOf(v);
				  cab_min=Character.getNumericValue(string_v.charAt(0));				  
				  for(i=1;i<string_v.length();i++){
					  num=Character.getNumericValue(string_v.charAt(i));
					  if( num <= cab_max &&   // cambio de dígitos no es mayor que max
						  num >= cab_min  ){ // cambio de dígitos no es menor que el valor original
						  string_final_v=string_v.substring(i)+string_v.substring(0, i);
						  final_v=Integer.parseInt(string_v.substring(i)+string_v.substring(0, i)); // back + front
						  if(string_v.length()==string_final_v.length()  && min<=v && v<max && v<final_v && final_v<=max){
							  
							  //System.out.println((num_recycled+1)+" - ["+v+","+final_v+"]");
							  
							  enc=false;
							  for(j=0;j<soluciones_valor.size();j++){ // evitar soluciones capicua 1212
								  if(soluciones_valor.get(j)==final_v){
									  enc=true;
								  }
							  }
							  if(!enc){
								  soluciones_valor.add(final_v);
								  num_recycled++;
							  }
						  }
					  }
				  }
				  soluciones_valor.clear();
				  v++;
			  }
		  }
		  
		  //System.out.println("RESULTADO "+num_recycled+" \n");
		  
		  return num_recycled;
	}
	
	public static void main(String[] args) throws IOException {
		FileReader fr = new FileReader(args[0]);
		BufferedReader bf = new BufferedReader(fr);
		int ntest=0;
		
		FileWriter fstream = new FileWriter("out.txt");
		BufferedWriter out = new BufferedWriter(fstream);
		
		String lines = bf.readLine();
		String liner, linew;
		int lines_r=0;
		String[] numbers;
		int total;
		
		while((liner = bf.readLine())!=null && lines_r<=Integer.parseInt(lines)) {
			ntest++;
			numbers=liner.split(" ");
			total=f_recycled(numbers[0],numbers[1]);
			linew="Case #"+ntest+": "+total+"\n";
			out.write(linew);
			lines_r++;
		}
		out.close();
		fr.close();
	}
}
