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;
	}
}


import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Scanner;

public class C {
	public static HashMap<Integer, ArrayList<Integer>> recycledNumbers = new HashMap<Integer, ArrayList<Integer>>( );

	public ArrayList<Integer> getRecycledNumbers( Integer n, Integer a, Integer b ) {
		if ( n < 10 || ( n < 100 && n % 10 == 0 ) )
			return null;

		ArrayList<Integer> aList = recycledNumbers.get( n );
		if ( aList == null ) {
			aList = new ArrayList<Integer>( );
			
			String s = n.toString( );
			int len = s.length( );
			for ( int i = 1; i < len; i++ ){
				Integer m = new Integer( s.substring( len-i ) + s.substring( 0, len-i) );
				if ( m > n && m.toString( ).length( ) == s.length( ) ) {
					if ( !aList.contains( m ) ) {
						aList.add( m );
					}
				}
			}
			recycledNumbers.put( n, aList );
		}
		return filterRecycledNumbers( aList, a, b );
	}
	
	public ArrayList filterRecycledNumbers( ArrayList<Integer> list, Integer a, Integer b ) {
		ArrayList<Integer> retList = new ArrayList<Integer>( );
		Iterator<Integer> iterator =list.iterator( );
		while ( iterator.hasNext( ) ) {
			Integer i = iterator.next( );
			if ( ( a <= i && i <= b ) ) {
				retList.add( i );
			}
		}
		return retList;
	}

	public void solve( Scanner sc, PrintWriter pw ) {
		int tests = sc.nextInt( ); sc.nextLine( );
		for ( int i = 0 ; i < tests; i++ ) {
			int a = sc.nextInt( );
			int b = sc.nextInt( );

			ArrayList<Integer> recycledNumbers = new ArrayList<Integer>( );
			for ( int j = a; j <= b; j++ ) {
				ArrayList<Integer> lst = getRecycledNumbers( j, a, b );
				if ( lst != null && lst.size( ) > 0 ) {
					recycledNumbers.addAll( lst );
				}
			}
			
			pw.print( "Case #" + (i+1) + ": " + recycledNumbers.size( ) );
			pw.println( );
			pw.flush( );
		}
	}

	public static void main ( String[] args ) throws IOException {
		Scanner sc = new Scanner(new FileReader("C-small-attempt0.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("C-small-attempt0.out"));
		new C( ).solve( sc, pw );
		pw.close( );
		sc.close( );
	}
}