
import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;
import java.io.File;
import java.io.IOException;
import java.io.FileWriter;
import java.io.BufferedWriter;

public class Recycle
{
	public static void main(String[] args)
	{
/*		Set<Integer> perms = getPermutations(123456);
		
		for(Integer i: perms)
			System.out.println(i);*/
	
		try
		{
			Scanner s = new Scanner(new File("recycle.in"));
			BufferedWriter w = new BufferedWriter(new FileWriter(new File("recycle.out")));
			int numCases = s.nextInt();
			s.nextLine();
			
			for(int n = 1;n <= numCases; n++)
			{
				int A = s.nextInt();
				int B = s.nextInt();
				int count = 0;
				for(int k = A; k <= B; k++)
				{
					count += getNumPairs(k, B);
				}
				
				w.write("Case #" + n + ": " + count + "\n");
			}
			
			w.flush();
			w.close();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}
	
	public static int getNumPairs(int n, int B)
	{
		Set<Integer> possibles = getPermutations(n);
		int count = 0;
		for(Integer i : possibles)
			if(i > n && i <= B)
				count++;
		return count;
	}
	
	public static Set<Integer> getPermutations(int n)
	{
		Set<Integer> perms = new TreeSet<Integer>();
		char[] digits = String.valueOf(n).toCharArray();
		
		for(int firstPos = 1; firstPos < digits.length; firstPos++)
		{
			String toBuild = "";
			for(int k = 0; k < digits.length; k++)
				toBuild += digits[(firstPos + k) % digits.length];
			perms.add(Integer.parseInt(toBuild));
		}
		return perms;
	}
	

}
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.StringTokenizer;


public class RecycledNumbers {
	
	public static void main(String[] args) throws Exception {
		int i,j,k;
		int A, B;
		int L;
		String first, second, secondNoLeadingZeros;
		int s;
		HashSet<Integer> hs = new HashSet<Integer>();
		
		BufferedReader br = new BufferedReader(new FileReader("C-small.in"));
		PrintWriter out = new PrintWriter("C-small.out");
		StringTokenizer st;
		
		int T = Integer.parseInt(br.readLine());
		int res;
		
		for (k=1;k<=T;k++) {
			st = new StringTokenizer(br.readLine());
			A = Integer.parseInt(st.nextToken());
			B = Integer.parseInt(st.nextToken());
			L = Integer.toString(A).length();
			res = 0;
			
			for (i=A;i<=B;i++) {
				
				first = Integer.toString(i);
				hs.clear();
				hs.add(i);
				
				for (j=1;j<L;j++) {
					second = first.substring(j)+first.substring(0, j);
					s = Integer.parseInt(second);
					secondNoLeadingZeros = Integer.toString(s);
					if (secondNoLeadingZeros.length() == L) {
						if (( s >= A)&&(s <= B)) {
							if (hs.contains(s) == false) {
								hs.add(s);
								res++;
							}
						}
					}
				}
					
			}
			
			res /= 2;
			out.println("Case #"+k+": "+res);
			
		}
		
		out.close();
		
	}

}
