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;




public class Numbers {
	
	public static FileReader fr;
	public static BufferedReader br;
	public static FileWriter fw;
	public static BufferedWriter bw;
	
	
	public void read(String path) throws Exception
	{
		 fr = new FileReader(path);
		
		 br=new BufferedReader(fr);
	
	}
	
	
	public void write(String path) throws Exception
	{
		
	}
	
	public void execute(BufferedReader br,String path)throws Exception
	{
		
		String s;
		
		fw =new FileWriter(path,false);
		bw=new BufferedWriter(fw);
		s=br.readLine();	
		int i1=1;
		
		while((s=br.readLine())!=null)
		{
			int count =0;
			String st[]=s.split("\\s");
			int a=Integer.parseInt(st[0]);
			int b=Integer.parseInt(st[1]);
			
			
			
			for(int i=a;i<=b;i++)
			{
				int temp=i;
				String abc=Integer.toString(temp);
				int length=abc.length();
				int index=length-1;
				String tempString=abc;
				while(index>0)
				{
				
					String first=tempString.substring(0, index);
					String second=tempString.substring(index,length);
					abc=second+first;
					int newnumber=Integer.parseInt(abc);
					if((newnumber<=b && newnumber>temp )&& !abc.startsWith("0") && (Integer.toString(temp).length())==abc.length())
						count++;
					
					index--;
						
				}
			}
			
			bw.write("Case #"+ i1++ +": " +count +"\n");
			
			
			
			
		
		}
		bw.close();
		fr.close();
		
		
	}
	public static void main(String[] args) throws Exception
	
	{
		Numbers t=new Numbers();
		t.read("E:\\codejam\\Files\\C.in");
		t.execute(br,"E:\\codejam\\Files\\C.out");
	
		
	}

}
