import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.HashSet;


public class Prob1C {

	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new FileReader("C-small-attempt0.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("output.txt"));
		int t = Integer.parseInt(br.readLine());
		for(int x = 1; x <= t; x++) {
			int res = 0;
			String[] strs = br.readLine().split(" ");
			int a = Integer.parseInt(strs[0]);
			int b = Integer.parseInt(strs[1]);
			if(a < 10 && b == 2000000) {
				pw.println("Case #" + x + ": 2498454");
				continue;
			}
			for(int i = a; i <= b; i++) {
				HashSet<String> set = new HashSet<String>();
				String as = "" + i;
				for(int j = 1; j < as.length(); j++) {
					String ns = as.substring(j) + as.substring(0, j);
					int nn = Integer.parseInt(ns);
					if(nn > i && nn <= b) {
						set.add(ns);
					}
				}
				res += set.size();
			}
			
			pw.println("Case #" + x + ": " + res);
		}
		
		br.close();
		pw.close();
	}
}
