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.util.*;

public class QualC12 {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int T = in.nextInt();	
		for (int i = 1; i <= T; i++) {
			int A = in.nextInt();
			int B = in.nextInt();
			int npairs = 0;
			for (int j = A; j <= B; j++) {
				String s = String.valueOf(j);
				String ns = s + s;
				boolean containsRepeat = false;
				for (int k = 1; k < s.length(); k++) {
					String rot = ns.substring(k, k + s.length());
					int rnum = Integer.valueOf(rot);
					if (rnum > j && rnum <= B && String.valueOf(rnum).length() == s.length()) {
						if (containsRepeat(s)) containsRepeat = true;
						++npairs;
					}
				}
				if (containsRepeat) --npairs;
			}
			System.out.println("Case #" + i + ": " + npairs);
		}
	}

	private static boolean containsRepeat(String s) {
		if (s.length() % 2 != 0) return false;
		if (s.substring(0, s.length()/2).equals(s.substring(s.length()/2, s.length()))) {
			return true;
		}
		else return false;
	}

}