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.*;
import java.util.HashMap;

class GoogleRecycle{
	
	public static int[] findNext(String s, int n)
	{
		int a[]= new int[n];
		for (int i =0; i<s.length();i++)
		{
			StringBuilder sb = new StringBuilder();
			sb.append(s.substring(i));
			sb.append(s.substring(0,i));
			Integer temp = Integer.parseInt(sb.toString());
			if(temp.toString().length()==s.length())
				a[i]=Integer.parseInt(sb.toString());
			else 
				a[i]=0;
		}
		return a;
	}

	public static void main(String[] args) throws IOException
	{
		FileReader fr = new FileReader("C-large.in");
		BufferedReader br = new BufferedReader(fr);
		FileWriter fstream = new FileWriter("output.txt");
		BufferedWriter out = new BufferedWriter(fstream);
		
		int testcases = Integer.parseInt(br.readLine());
		
		for (int i=1;i<=testcases;i++)
		{
			
			String line = br.readLine();
			int start = Integer.parseInt(line.substring(0, line.indexOf(' ')));
			int temp =start;
			int n =0;
			while(temp>0)
			{
				temp=temp/10;
				n++;
			}
			line = line.substring(line.indexOf(' ')+1);
			int end = Integer.parseInt(line);
			int count =0;
			for (int j=start;j<=end;j++)
			{
				int[] a =new int[n];
				Integer x = j;
				a= findNext(x.toString(),n);
				HashMap<Integer,String> map = new HashMap<Integer,String>();
				int flag = 0;
				for (int p: a)
				{
					
					if(p>j && p<=end && p!=0 && !map.containsKey(p))
					{
						map.put(p, null);
						count++;
					}
				
				}
				
			}
			//System.out.println("Reached here also");
			out.write("Case #"+i+": "+count);
			if(i!=testcases)
			{
				out.write("\n");
			}
		
		}
		out.close();
		br.close();
	}
}