import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.util.*;

public class C {
	private int[] tens = {1, 10, 100, 1000, 10000, 100000, 1000000, 10000000};
	public static void main(String[] args) {
		C c = new C();
		c.solve();
	}
	
	public void solve() {
		Scanner in = new Scanner(System.in);
		int t = in.nextInt();
		for(int ii = 1; ii <= t; ++ii) {
			int a = in.nextInt();
			int b = in.nextInt();
			long total = 0;
			for(int check = a; check < b; ++check) {
				total += countRecycle(check, b);
			}
			System.out.printf("Case #%d: %d\n", ii, total);
		}
	}
	
	public int countRecycle(int num, int max) {
		int size = getSize(num); //12345, size = 4, 10000, size = 4, 9999, size = 3
		HashSet<Integer> valid = new HashSet<Integer>();
		for(int i = 1; tens[i] <= num; ++i) {
			int newNum = (num/tens[i]) + (num%tens[i])*(tens[size-i+1]);
			if(newNum <= max && newNum > num)
				valid.add(newNum);
		}
		return valid.size();
	}
	
	public int getSize(int a) {
		int size = 0;
		while(tens[size] <= a)
			++size;
		return size - 1;
	}
}