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.io.*;

public class C {

    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        int T;
        T = Integer.parseInt(reader.readLine());
        for (int i = 1; i <= T; i++) {
			String[] input = reader.readLine().split(" ");
            int result = 0;
			int A=Integer.parseInt(input[0]);
			int B=Integer.parseInt(input[1]);
			if(A<10){
				result=0;
			} else if(A<100){
				for(int j=A;j<=B;j++){
					String temp1 = j+"";
					int temp = ( (Integer.parseInt(temp1.charAt(0)+"") + Integer.parseInt(temp1.charAt(1)+"")) * 11 ) - j;
					if(temp > j && temp <=B ){
						++result;
					}
				}
				
			} else if(A<1000){ 
				for(int j=A;j<=B;j++){
					String temp = j+"";
					String temp1 = Character.toString(temp.charAt(2))+Character.toString(temp.charAt(0))+Character.toString(temp.charAt(1));
					String temp2 = Character.toString(temp.charAt(1))+Character.toString(temp.charAt(2))+Character.toString(temp.charAt(0));
					int temp3 = Integer.parseInt(temp1);
					int temp4 = Integer.parseInt(temp2);
					if(j<temp3 && temp3<=B){
						++result;
					}
					if(j<temp4 && temp4<=B){
						++result;
					}
				}
			}
			if (i < T) {
            System.out.println("Case #" + i + ": " + result);
			} else {
            System.out.print("Case #" + i + ": " + result);
			}
		}
		
	}
}