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.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.util.Scanner;


public class problem3 {
	public static void main(String[] args){
		try{
			  // Create file 
			  FileWriter fstream1 = new FileWriter("E:/out.txt");
			  BufferedWriter outp = new BufferedWriter(fstream1);
			  try{
				  Scanner sc = new Scanner(new File("E:/C-large.in"));
				  int cnt1=sc.nextInt();
				  cnt1=1;
				  while (sc.hasNextInt()) {
					  int low = sc.nextInt();
					  int high = sc.nextInt();
					  int cnt=0;
					  for(int i=low; i<=high;i++){
						  int y=i;
						  String str = new Integer(i).toString();
						  int[] sol = new int[str.length()];
						  int cn = 0;
						  for(int j=0;j<str.length(); j++){
							  while(y%10==0){
								  y=y/10;
								  j++;
							  }	  
							  int x=y%10;
							  y=y/10;
							  y+=x*(int)(Math.pow(10, (str.length()-1)));
							  if(y>i&&y<=high){
								  boolean rep = false;
								  for(int k=0;k<cn;k++){
									  if(y==sol[k])
										  rep = true;
								  }
								  if(rep==false){
									  cnt++;
									  sol[cn]=y;
									  cn++;
								  }
							  }
								  
						  }
						  
					  }
					  outp.write("Case #"+cnt1+": "+cnt+'\n');
					  cnt1++;
				  }
			  }catch(FileNotFoundException e){System.out.println("File not found");}
			  outp.close();
		}catch (Exception e){//Catch exception if any
		System.err.println("Error: " + e.getMessage());
		} 
	}
}
