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.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Scanner;


public class abc {
	public static void main(String args[]) 
	{
		int x ,y,j,k,ans=0;
		int tcount =0;
		try{
			  // Create file 
			  FileWriter fstream = new FileWriter("C-large.out");
			  BufferedWriter out = new BufferedWriter(fstream);
			 
		
      
		
		 Scanner myfile;
		try {
			myfile = new Scanner(new FileReader("C-large.in"));
				 int testcases = myfile.nextInt();
         while (testcases != 0 || myfile.hasNextInt())  
         {          // Read file content using a while loop
        	 ans =0; 
        	 x = myfile.nextInt();
        	 y = myfile.nextInt();
        	 
        // System.out.println(x + y);
		
		int divby = 1;
		for(k = x;k>=10;k/=10)
		{
			divby = divby *10;
		}
		
		int divdivby = 1;
		for(j=x;j<=y;j++)
		{
			int[] ar = new int[20];
			int itr = 0;
			for(divdivby = divby ; divdivby != 1; divdivby/=10)
		  	
			{
			int m = j % divdivby;
			int n = j /divdivby;
			m  = m *(divby /divdivby)*10;
			m = m+n;
			for(int l=0;l<=itr;l++)
			{
				if(ar[l] == m)
				{	m=0;break;}
				
			}
			if(m!=0)
			{
				ar[itr] = m;
				itr++;
			}
			if(m > j && m <= y && m >= x)
				{
				ans++;
				//System.out.println(m +"-- "+j);
				}
			
			}
		}
		
		
		out.write("Case #"+ ++tcount+": "+ans+"\n");
		
	//	System.out.println(ans);
		testcases--;
	}

		  
         
         myfile.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} // Reading file using Scanner

		out.close();
		}catch (Exception e){//Catch exception if any
			  System.err.println("Error: " + e.getMessage());
			  }
		
		
	}

	
}
