import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

import java.io.File;
import java.io.FileNotFoundException;
import java.util.HashSet;
import java.util.Scanner;


public class RecycledNumbers {
	public static void main(String[] args){
		Scanner in;
		try {
			in = new Scanner(new File("C-large.in"));
			solve(in);
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}
	public static void solve(Scanner in){
		int cases =in.nextInt();
		for(int i = 1; i<=cases; i++){
			int min = in.nextInt();
			int max = in.nextInt();
			int ans = 0;
			for(int j =min; j<=max; j++){
				ans+=combos(j, min, max);
			}
			System.out.println("Case #" +i+": "+(ans/2));
			
		}
		
	}
	public static int combos(int num, int min, int max){
		if(num<10){
			return 0;
		}
		HashSet<Integer> diffNums = new HashSet<Integer>();
		diffNums.add(num);
		int ans = 0;
		String numString = num+"";
		for(int i =0; i< numString.length(); i++){
			numString = numString.substring(1)+numString.charAt(0);
			int numTest = Integer.parseInt(numString);
			if(numTest<=max&&numTest>=min&&diffNums.add(numTest)){
				ans++;
			}
		}
		return ans;
		
		
	}
	
}
