import java.io.*;

class code1
{
	public static void main(String args[]) throws Exception 
	{
		File ii = new File ("C-small-attempt1.in");
		FileInputStream fis = new FileInputStream(ii);
		BufferedReader  br = new BufferedReader(new InputStreamReader (fis));
		int cases = Integer.parseInt(br.readLine());
		FileOutputStream fout = new FileOutputStream ("output.txt");
		DataOutputStream dout = new DataOutputStream (fout);
		int total=0;
		for(int i=0;i<cases;i++){
		String temp = br.readLine();
		String parts [] = temp.split(" ");
		int lower = Integer.parseInt(parts[0]);
		int upper = Integer.parseInt(parts[1]);
		System.out.println(lower+" "+upper);
		
		for(int j=lower;j<=upper;j++)
		{
			int abc = j;int length=0;
			if(j<10)continue;
			while (abc!=0){abc/=10;length++;}
			abc=j;
			for(int m=0;m<length-1;m++){
				int shift = abc%10;
				abc=abc/10;
				System.out.println("hi "+j);
				abc=abc+shift*power(10,length-1);
				if(abc<=upper&&shift!=0&&abc>j)total++;
				System.out.println(total);
			}
		}
 		dout.writeBytes("Case #"+(i+1)+ ": "+total+"\n");
 		total=0;
		}//for close
		
	}

	private static int power(int i, int j) {
		int no=1;
		for(int a=0;a<j;a++){no=10*no;}
		return no;
	}
}
import java.util.*;
import java.io.*;

public class Solution {
	public void doMain() throws Exception {
		BufferedReader in = new BufferedReader(new FileReader("input.txt"));
		PrintWriter pw = new PrintWriter(new FileWriter("output.txt"));		
		int CaseNumber = Integer.parseInt(in.readLine());		
		for (int cas=1; cas <= CaseNumber; cas++) {
			int nbr = 0 ;			
			String[] str = in.readLine().split(" ");
			int A = Integer.parseInt(str[0]);
			int B = Integer.parseInt(str[1]);
			if(A < 10) {
				pw.println("Case #"+cas+": "+nbr);
			}
			else if(A==B){
				pw.println("Case #"+cas+": "+nbr);
			}
			else{
				ArrayList<String> n = new ArrayList<String>();
				for(int i=A; i<=B; i++){
					String st = Integer.toString(i);
					int l = st.length();
					for(int j=l-1; j>0 ; j--){
						String s = st;
						s = s.substring(j) + s;
						s = s.substring(0,l);
						
						if(Integer.parseInt(s) >A && Integer.parseInt(s) <B && Integer.parseInt(s)!=i && !n.contains(""+i+"-"+s) && !n.contains(s+"-"+i)){
							n.add(s+"-"+i);
							n.add(""+i+"-"+s);
							nbr++;
						}
					}	
				}
				pw.println("Case #"+cas+": "+nbr);
			}
		}
		
		in.close();
		pw.flush();
		pw.close();
	}
	
	public static void main(String[] args) throws Exception {
		(new Solution()).doMain();
	}
}