import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;


public class Main {

//	static int MAX = 10000;
	static int MAX = 2000000;
	static Object[] All = new Object[MAX+1];
	
	static int size( int x ) {
		if(x>999999) return 7;
		if(x>99999)  return 6;
		if(x>9999)   return 5;
		if(x>999)    return 4;
		if(x>99)     return 3;
		if(x>9)      return 2;
		return 1;
	}
	static int[] rotate( int value ) {
		List<Integer> result = new ArrayList<Integer>();
		int[] V = new int[8];
		int s = size(value);
		int x = value;
		
		for(int i=s-1;i>=0;i--) {
			V[i] = x%10;
			x /=10;
		}
		int rot;
		for(int i=1; i<s; i++) {
			if(V[i]!=0){
				rot=0;
				for(int j=0,ii=i;j<s; j++,ii=(ii+1)%s){
					rot=rot*10+V[ii];
				}
				if(rot>value && !result.contains(rot))
					result.add(rot);
			}
		}
		if( result.isEmpty() )
			return null;
		int[] r = new int[result.size()];
		for(int i=0; i<r.length; i++)
			r[i]=result.get(i);
		return r;
	}
	
	static void precalculate() {
		for(int i=1; i<=MAX; i++){
			All[i] = rotate(i);
		}
	}
	static int solve( Scanner in ) {
		int A, B, sol=0;
		
		A = in.nextInt();
		B = in.nextInt();

		for( int i=A; i<=B; i++) {
//			List<Integer> result = rotate(i);
			if( All[i]!=null ) {
				for(int value: (int[])All[i] ) {
					if( value <= B )
						sol++;
				}
			}
		}

		return sol;
	}
	
	public static void main ( String args[] ) {
		int T; 
		Scanner in = new Scanner(System.in);
		T = in.nextInt();
		int cnt=0;
		int sol;
		precalculate();
		for( cnt=1; cnt<=T; cnt++ ) {
			sol = solve( in );
			System.out.printf("Case #%d: %d\n", cnt, sol);
		}

	}
}

import java.io.BufferedReader;
import java.io.FileReader;

import java.io.BufferedWriter;
import java.io.FileWriter;

import java.io.IOException;

import java.util.HashMap;
import java.util.Vector;

public class Task
{
    public static void main(String[] args)
    {	
	
	  try
	  {
	      readSolveAndWrite("C-large.in", "output_file.txt");
	  }
	  catch(IOException ioException) { System.err.println(ioException); }

	//for(int i = 0; i < 50; i++)
	    //System.out.println((i + 1) + "-> " + solve("1 2000000"));

	//System.out.println(solve("1 10"));
	//System.out.println(solve("10 40"));
	//System.out.println(solve("100 500"));
	//System.out.println(solve("1111 2222"));
    }

    protected static void readSolveAndWrite(final String inputPath, final String outputFile) throws IOException
    {
	BufferedReader in = new BufferedReader(new FileReader(inputPath));
	BufferedWriter out = new BufferedWriter(new FileWriter(outputFile));
	int n = Integer.parseInt(in.readLine());
	for(int i = 0; i < n; i++)
	    {
		final String inputLine = in.readLine();
	        final String outputLine = "Case #" + (i + 1) + ": " + solve(inputLine);

		System.out.println(outputLine);

	        out.write(outputLine);
	        out.newLine();
	    }

        out.flush();
        out.close();
        in.close();
    }

    protected static String solve(final String line)
    {
	String[] elements = line.split(" ");
	final int min = Integer.parseInt(elements[0]);
	final int max = Integer.parseInt(elements[1]);

	int result = 0;
	for(int i = min; i <= max; i++)
	    result += get(i, max);
	return "" + result;
    }

    protected static int convertToInt(Vector<Integer> digits)
    {
	int result = 0;
	final int size = digits.size();
	for(int i = size - 1; i >= 0; i--)
	    result = result*10 + digits.elementAt(i).intValue();
	 
	return result;
    }

    protected static int get(int current, int max)
    {
	int result = 0;
	
	Vector<Integer> base = new Vector<Integer>();
	int m = current;
	while(true)
	    {
		final int digit = m % 10;

		base.add(new Integer(digit));
		m = m / 10;
		if(m == 0)
		    break;
	    }

	HashMap<String, Integer> map = new HashMap<String, Integer>();
	final int size_base = base.size();
	for(int i = 1; i < size_base; i++)
	    {
		
		Vector<Integer> temp = new Vector<Integer>();

		for(int j = i; j < size_base; j++)
		    temp.add(base.elementAt(j));
		    
		for(int j = 0; j < i; j++)
		    temp.add(base.elementAt(j));
 
		int pair = convertToInt(temp);
		if(current < pair && pair <= max && null == map.get(new String(current + "" + pair)))
		    {
			//System.out.println(current + " -> " + pair);
			map.put(new String(current + "" + pair), new Integer(1));
			map.put(new String(pair + "" + current), new Integer(1));
			result++;
		    }
	    }

	return result;
    }
}