import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

/**
 * C.java
 * @author Joel C. Soares
 */

import java.util.Scanner;
import java.util.HashSet;
 
public class C 
{
	public static int inv( int n, int l )
	{
		int x = n % 10, p = ( int ) Math.pow( 10, l - 1 );
		
		for( int i = 0; i < l - 1; i++ )
		{			
			x = x * 10 + n / p;
			n = n % p;
			p = p / 10;
		}
		
		return x;
	} // fim de método
	
	public static int length( int n )
	{	
		int i = 0;
	
		if( n == 0 )
			return 1;
			
		while( n != 0 )
		{
			n = n / 10;
			i++;
		}
		
		return i;
	} 
	
	public static void main( String args[] )
	{
		Scanner input = new Scanner( System.in );
		int t, a, b, n, q, p, l, total, count;
		HashSet<Integer> set = new HashSet<Integer>();
		
		t = input.nextInt();
		for( int i = 0; i < t; i++ )
		{
			a = input.nextInt();
			b = input.nextInt();
			
			// computa resultado
			set.clear();
			total = 0;
			for( n = a; n < b; n++ )
			{
				q = n;
				l = length( q );
				set.add( q );
				count = 1;
				
				for( int j = 0; j < l - 1; j++ )
				{			
					q = inv( q, l );
					
					// verifica restricoes
					if( q >= a && q <= b && !set.contains( q ) )
					{
						set.add( q );
						count++;
					} // fim de if
				} 
				total += ( count - 1 ) * count / 2;
			} // fim de for
			
			System.out.printf( "Case #%d: %d\n", i + 1, total );
		} 	
	}
}