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;
	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package codejam;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;

/**
 *
 * @author cristian
 */
public class CodeJam {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        StringBuffer sb;
        Boolean firstLine = true;

        try {
            // Open the file that is the first 
            // command line parameter
            FileInputStream fstream = new FileInputStream("/tmp/problemB.txt");
            // Get the object of DataInputStream
            DataInputStream in = new DataInputStream(fstream);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            String strLine;
            //Read File Line By Line
            int line = 1;
            while ((strLine = br.readLine()) != null) {
                if (firstLine) {
                    firstLine = false;
                    continue;
                }
                sb = new StringBuffer();
                // Print the content on the console
                int A = Integer.parseInt(strLine.split(" ")[0]);
                int B = Integer.parseInt(strLine.split(" ")[1]);
                int n = A;
                int m;
                int recycled = 0;
                while (n < B) {
                    recycled += moveLast(n, B);
                    n++;
                }

                System.out.println("Case #" + line + ": " + recycled);
                line++;
            }
            //Close the input stream
            in.close();
        } catch (Exception e) {//Catch exception if any
            System.err.println("Error: " + e.getMessage());
        }
    }
    
    private static int moveLast(int n, int B) {
        int recycled = 0;
        int tmpN = n;
        int m;

        StringBuffer sb;

        for (int i = 0; i < (n + "").length() - 1; i++) {
            sb = new StringBuffer();
            sb.append((tmpN + "").charAt((tmpN + "").length() - 1));
            if ((tmpN + "").length() < (n + "").length()) {
                sb.append("0");
            }
            sb.append((tmpN + "").substring(0, (tmpN + "").length() - 1));

            m = Integer.parseInt(sb.toString());

            //A â¤ n < m â¤ B
            if ((n < m) && (m <= B)) {
                recycled++;
            }
            tmpN = m;

        }

        return recycled;
    }
}

