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.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;


public class ProbB {

	/**
	 * @param args
	 * @throws IOException 
	 */
	
	public static HashMap<Integer, Integer> map = new HashMap<Integer, Integer>();
	
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		BufferedReader inputStream;
		PrintWriter outputStream;
		try {
			inputStream = new BufferedReader(new FileReader("X:\\GCJ\\input.txt"));
			outputStream = new PrintWriter(new BufferedWriter(new FileWriter("X:\\GCJ\\output.txt")));


			int n=Integer.parseInt(inputStream.readLine()),z=0;
			
			while(n>0)
			{
				n--;z++;c=0;map.clear();
				String s=inputStream.readLine();
				int spc= s.indexOf(' ');
				int r=0,A=Integer.parseInt(s.substring(0,spc)),B=Integer.parseInt(s.substring(spc+1));
				
				for (int i = A; i < B; i++) {
					if(map.containsKey(i))continue;
					func(i,A,B,digits(A));
					
				}
				
				
				outputStream.println("Case #"+z+": "+c);
				System.out.println("Case #"+z+": "+c);
			}
			
			outputStream.close();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			System.out.println("File not found.");
			e.printStackTrace();
		}
	}

	public static int digits(int a) {
		int z=0;
		while(a!=0){
			a/=10;z++;
		}
		return z;
	}
	
	public static int c=0;
	
	public static void func(int a,int A,int B, int n){
		int a2=0;
		int o=a;
		
		for (int j = 1; j < n; j++) {
			
			int k=a%10;
			for (int i = 0; i < n-1; i++) {
				k*=10;
			}
			a2= k+a/10;
								
			if(a2>o && a2<=B){
				map.put(o,a2);c++;
//				System.out.println(c+":"+o+","+a2);
			}
			
			if(a2>a && a>o && a2<=B){
				map.put(a,a2);c++;
//				System.out.println(c+":"+a+","+a2);
			}
			
			
			a=a2;
		}
		
	}
	
}
