import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int t=sc.nextInt();
		int casos=1, a, b, n, m, cont;
		while(t!=0){
			a=sc.nextInt();
			b=sc.nextInt();
			if(a>b){
				int aux=a;
				a=b;
				b=aux;
			}
			System.out.printf("Case #%d: ",casos++);
			if(a==b){
				System.out.printf("%d\n",0);
			}else{
				cont=0;
				for(n=a;n<b;n++){					
					for(m=n+1;m<=b;m++){					
						if(isRecycled(n,m)) cont++;
					}
				}
				System.out.printf("%d\n",cont);
			}
			t--;
		}		
	}
	public static boolean isRecycled(int n1, int n2){
		String s1, s2, aux;
		s1 =  String.valueOf( n1 );
		s2 =  String.valueOf( n2 );		
		boolean r = false;		
		for(int i=0;i<s1.length();i++){
			aux="";
			aux=s1.substring(i,s1.length())+s1.substring(0,i);
//			System.out.println(aux);
			if(aux.equals(s2)){
				r=true;
				break;
			}
		}		
		return r;
	}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.*;
public class recycled {


	public static void main(String[] args) throws IOException	
	{
		
		BufferedReader in = new BufferedReader(new FileReader("C-small-attempt0.in"));
		PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("output.txt")));
		int nc = Integer.parseInt(in.readLine().trim());



		for (int z=1; z<=nc; z++){
			String[] line = in.readLine().trim().split("\\s+");
			int a = Integer.parseInt(line[0]);
			int b = Integer.parseInt(line[1]);
			boolean[] flgs = new boolean[2000000+1];
			int count = 0;
			for (int i = a; i <=b; i++)
			{
				
				List<Integer> list = new ArrayList<Integer>();
				list.add(i);
				if (flgs[i]) continue;
				
				int val = 1;
				String num1 = i+"";
				for (int j = 1; j <=num1.length(); j++)
				{

					String num2 = num1.substring(j) + num1.substring(0, j);
					int num = Integer.parseInt(num2);
					if (num2.charAt(0)!='0') if (num<=b&&num!=i&&num>a)  if (!flgs[num])
					{		
						list.add(num);
						val++;
						flgs[num] = true;
					}



				}
				val = val*(val-1);
				val>>=1;
				//if (val>0)tr(list);
				
				count+=val;	
				//if (val>0) System.out.println(count);

			}





			//MODIFY
			out.println(String.format("Case #%d: %d", z,count));
		}
		out.close();
	}
	public static void tr(Object...objects)
	{
		System.out.println(Arrays.deepToString(objects));
	}
}
