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.util.Arrays;
import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;


public class RecyclingNumber
{
	public static void main(String[] args)
	{
		try
		{
			BufferedReader input = new BufferedReader(new FileReader("C-small-attempt0.in"));
			BufferedWriter output = new BufferedWriter(new FileWriter("output.txt"));
			
			Integer numCases = Integer.parseInt(input.readLine());
			
			
			for(int i=0; i<numCases; ++i)
			{
				output.write("Case #"+(i+1)+": ");
				
				//output the number
				Scanner in= new Scanner(input.readLine());
				Integer A = in.nextInt();
				Integer B = in.nextInt();
				Integer numDigits = A.toString().length();
				Integer n=0;
				for(int j=A; j<B; ++j)
				{
					Set<Integer> set = new TreeSet<Integer>();
					for(int k=1; k<numDigits; ++k)
					{
						String s = new Integer(j).toString();
						String r = s.substring(numDigits-k) + s.substring(0,numDigits-k);
						set.add(Integer.parseInt(r));
					}
					for(Integer r : set)
					{
						if(j < r && r<=B)
							++n;
					}
				}
				output.write(n.toString());
				
				if(i != numCases-1)
					output.write('\n');
			}
			
			input.close();
			output.close();
		} catch (NumberFormatException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}
