import java.io.*;

class code1
{
	public static void main(String args[]) throws Exception 
	{
		File ii = new File ("C-small-attempt1.in");
		FileInputStream fis = new FileInputStream(ii);
		BufferedReader  br = new BufferedReader(new InputStreamReader (fis));
		int cases = Integer.parseInt(br.readLine());
		FileOutputStream fout = new FileOutputStream ("output.txt");
		DataOutputStream dout = new DataOutputStream (fout);
		int total=0;
		for(int i=0;i<cases;i++){
		String temp = br.readLine();
		String parts [] = temp.split(" ");
		int lower = Integer.parseInt(parts[0]);
		int upper = Integer.parseInt(parts[1]);
		System.out.println(lower+" "+upper);
		
		for(int j=lower;j<=upper;j++)
		{
			int abc = j;int length=0;
			if(j<10)continue;
			while (abc!=0){abc/=10;length++;}
			abc=j;
			for(int m=0;m<length-1;m++){
				int shift = abc%10;
				abc=abc/10;
				System.out.println("hi "+j);
				abc=abc+shift*power(10,length-1);
				if(abc<=upper&&shift!=0&&abc>j)total++;
				System.out.println(total);
			}
		}
 		dout.writeBytes("Case #"+(i+1)+ ": "+total+"\n");
 		total=0;
		}//for close
		
	}

	private static int power(int i, int j) {
		int no=1;
		for(int a=0;a<j;a++){no=10*no;}
		return no;
	}
}
import java.util.Scanner;


public class C {

	public static class N
	{
		public static int[] m_num;
		public static int m_first;
		public static int length;
		
		public static void set(int n)
		{
			String s = Integer.toString(n);
			char[] c = s.toCharArray();
			m_num = new int[c.length];
			m_first = 0;
			for(int i = 0; i < c.length; i++)
			{
				m_num[m_num.length - i - 1] = Character.digit(c[i], 10);
			}
			length = m_num.length;
		}
		
		
		public static int nextNum()
		{
			m_first = (m_first + 1) % m_num.length;
			int ret = 0;
			int mult = 1;
			for(int i = 0; i < m_num.length; i++)
			{
				ret += (mult*m_num[(i+m_first)%m_num.length]);
				mult *= 10;
			}
			return ret;
		}
		
	}
	
	
	public static int[] binom = {0, 0, 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105};
	
	public static void main(String[] args)
	{
	
		Scanner in = new Scanner(System.in);
		
		int T = in.nextInt();
		
		for(int t = 1; t <= T; t++)
		{
			int A = in.nextInt();
			int B = in.nextInt();
			System.out.println("Case #" + t + ": " + foo(A, B));
		}
	}
	
	public static int foo(int lower, int upper)
	{
		if(upper < 10) return 0;
		
		int counter = 0;
		
		boolean[] checked = new boolean[upper - lower + 1];
		
		for(int i = lower; i <= upper; i++)
		{
			if(checked[i-lower]) continue;
			
			N.set(i);
			
			int items = 0;
			
			for(int j = 0; j < N.length; j++)
			{
				int num = N.nextNum();
				
				if(num < lower || num > upper || checked[num-lower]) continue;
				
				checked[num-lower] = true;
				
				items++;
			}
			
			counter += binom[items];
		}
		
		return counter;
	}
}
