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

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;


public class RecycledNumbersCodeJam2012Q {

	public long  solves(String A,String B){
		long a = Long.parseLong(A);
		long b = Long.parseLong(B);
		long s = 0 ; 
		for(long i = a ;i <= b; i++){
			s+= possibilities( Long.toString(i), a, b);
		}
		return s;
	}
	public long possibilities(String A,long a , long b ){
		long s = 0 ;
		long a0 = Long.parseLong(A);
		List<String> dup = new ArrayList<String>();
		dup.add(A);
		for(int i = 1 ; i < A.length();i++){
			String n= A.substring(i);
			String n1= A.substring(0,i);
			String aa = new String(n+n1);
			//System.out.println(aa);
			
			long a1= Long.parseLong(aa);
			
			if ( a1 < a0 &&  a1>= a && a1<=b && !dup.contains(aa)){	
				++s;
				dup.add(aa);
			}
		}
		return s ;
	}
	public static void main(String[] args) throws IOException {
		RecycledNumbersCodeJam2012Q si = new RecycledNumbersCodeJam2012Q();
	
		int T ;
		String CurLine = ""; 
	        
		InputStreamReader converter = new InputStreamReader(System.in);
		BufferedReader in = new BufferedReader(converter);
		CurLine = in.readLine();
		T= Integer.parseInt(CurLine);
		
		for(int i = 0 ; i < T;i++) {
			CurLine = in.readLine();
			String A = CurLine.split(" ")[0];
			String B = CurLine.split(" ")[1];
			System.out.println("Case #"+ (i+1)+": "+si.solves(A,B));
			
		}
	}
	
}
