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.*;
import java.util.*;
public class CSmall {
	public static Set set = new HashSet();
	public static int counter = 0;
	public static void main(String[] args) throws IOException {
		
		Scanner in = new Scanner(new File("C-small-attempt0.in"));
		PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("C-small.out")));
		
		int T = Integer.parseInt(in.nextLine());
		for (int i = 0; i < T; i++) {
			String[] lim = in.nextLine().split(" ");
			System.out.println(Arrays.toString(lim));
			for (int j = Integer.parseInt(lim[0]); j < Integer.parseInt(lim[1]); j++) {
				if (j >= 10) {
					pair(Integer.toString(j), lim);
				}
			}
			System.out.println(set.toString());
			
			
			out.write("Case #"+ (i+1) +": " + set.size());
			if (i != T-1)
				out.write("\n");
			set.clear();
			
		}	
		out.close();
		System.exit(0);
	}
	
	private static void pair(String num, String[] lim) {
		int len = num.length();
		int upLim = Integer.parseInt(lim[1]), lowLim = Integer.parseInt(lim[0]);
		for (int i = 0; i < len; i++) {
			String k = num;
			num = num.charAt(len-1) + num.substring(0,len-1);
			//System.out.println(num);
			
			int a = Integer.parseInt(num), b = Integer.parseInt(k);
			
			if (a!=b && a <= upLim && a >= lowLim && b <= upLim && b >= lowLim) {
				if (a<b) {
					set.add(num+k);
				} else {
					set.add(k+num);
				}
			}
		}
		
	}
}