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.*;
import java.io.*;

public class template {

    private StringBuilder result = new StringBuilder();
    
    public static void main(String[] args) {
        new template().go();
    }

    public void go() {

        File inputFile = new File("/Users/amornchaikanokpullwad/Documents/input.in");
        BufferedReader br = null;

        try {
            br = new BufferedReader(new FileReader(inputFile));
            int numTests = Integer.parseInt(br.readLine());
            
            for (int testCounter = 0; testCounter < numTests; ++testCounter) {
                int count = 0;
                String text[] = br.readLine().split(" ");
                long A = Long.parseLong(text[0]);
                long B = Long.parseLong(text[1]);
                for (long i = A; i <= B; i++) {
                    for (int j = 1; j < Long.toString(i).length(); j++) {
                        //System.out.println(j + " " + i);
                        long temp = reverse(Long.toString(i),j);
                        if (temp <= i) continue;
                        if (temp <= B) {
                            System.out.println(i+"+"+B);
                            count++;
                        }
                    }
                    
                    
                    //System.out.println(i+"+"+B);
                    
                    
                    
                }
                appendResult(testCounter, count);
            }
        } catch (FileNotFoundException fe) {
            fe.printStackTrace();
        } catch (IOException ie) {
            ie.printStackTrace();
        } finally {
            try {
                if (br != null) {
                    br.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
        writeResultToFile();
        System.out.println(result);
    }

    private void appendResult(int testCase, int outp) {

        result.append("Case #" + (testCase+1) + ": ");
        result.append(outp+"");

        result.append("\n");
    }

    private void writeResultToFile() {
        PrintWriter pr = null;

        try {
            pr = new PrintWriter(new File("/Users/amornchaikanokpullwad/Documents/output.in"));
            pr.print(result);

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (pr != null) {
                pr.close();
            }
        }
    }
    
    private long reverse(String in,int le){
       
        StringBuilder temp = new StringBuilder();
        for (int i = le; i > 0; i--) {
            //System.out.println(in);
            temp.append(in.charAt(in.length()-i));
            
        }
        for (int i = 0; i < in.length()-le; i++) {
            temp.append(in.charAt(i));
        }
        return Long.parseLong(temp.toString());
    }
}