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.FileInputStream;
import java.util.*;

public class Q_C {

    public static void main(String[] args) throws Exception {

        Scanner sc = new Scanner(new FileInputStream("C:\\C-small-attempt0.in"));
        Set<String> set = new HashSet<String>();
        int tests = sc.nextInt();

        for (int i = 0; i < tests; i++) {

            int a = sc.nextInt();
            int b = sc.nextInt();

            for (int j = a; j < b; j++) {
                List<Integer> list = getRecycledNumbers(j);
                for (int k : list) {
                    if (k > j && k <= b) {
                        set.add(j + " " + k);
                    }
                }
            }

            System.out.println("Case #" + (i+1) + ": " + set.size());
            set.clear();

        }

    }

    private static List<Integer> getRecycledNumbers(int num) {
        List<Integer> list = new ArrayList<Integer>();
        String s = String.valueOf(num);
        for (int i = s.length() - 1; i > 0; i--) {
            String temp = s.substring(i, s.length()) + s.substring(0, i);
            if (!temp.startsWith("0")) {
                int cur = Integer.valueOf(temp);
                list.add(cur);
            }
        }
        return list;
    }

}
