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 GoogleCodeJam18 {   
    
    public static void main(String[] args) throws IOException {

        FileInputStream getFile = new FileInputStream("C:\\1\\in1.txt");

        PrintWriter out = new PrintWriter(new File("C:\\1\\output.out"));
        BufferedReader br = new BufferedReader(new InputStreamReader(getFile));

        String strLine;
        strLine = br.readLine().trim();
        int test = Integer.parseInt(strLine);

        for (int i=0;i<test;i++) {
            strLine = br.readLine().trim();
            long incrementor = 0;
            String[] strings = strLine.split(" ");
            long A = Integer.parseInt(strings[0].trim());
            long B = Integer.parseInt(strings[1].trim());
            for (long num = A; num <= B; num++) {
                incrementor = incrementor + CodeJadu(num, A, B);
            }
            int k = i+1;
            out.println("Case #" + k + ": " + incrementor);
        }
        out.flush();
        out.close();
        br.close();
    }
    public static long CodeJadu(long present, long A, long B)
    {
        long initial = present;
        long sum = 0;
        int numdigits = (int) Math.log10((double)present);
        int multiplier = (int) Math.pow(10.0, (double)numdigits);
        while(true)
        {
            long q = present / 10;
            long r = present % 10;
            present = present / 10;
            present = present + multiplier * r;
            if(present == initial)
                break;
            if (initial < A) break;
            if (initial >= A && initial < present && present <= B) {
                sum++;
            }
        }
        return sum;


    }
}