import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}


import java.io.*;
import java.util.ArrayList;
import java.util.StringTokenizer;

/*
 * To change this template, choose Tools | Templates and open the template in the editor.
 */
/**
 *
 * @author doda
 */
public class RecycledNumbers {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws FileNotFoundException, IOException {
        // TODO code application logic here
        BufferedReader R = new BufferedReader(new FileReader("C:\\Users\\doda\\Desktop\\C-large.in"));
        PrintWriter P = new PrintWriter(new FileWriter("C:\\Users\\doda\\Desktop\\large.txt"));
        
        while (R.ready()) {
            int t = Integer.parseInt(R.readLine());
            for (int i = 0; i < t; ++i) {
                StringTokenizer s = new StringTokenizer(R.readLine());
                int out = 0;
                String O = "Case #" + (i + 1) + ":";
                int n = Integer.parseInt(s.nextToken());
                int m = Integer.parseInt(s.nextToken());
                for (int j = n; j <= m; ++j) {
                    int l[] = diffOrder(j);
                    for (int k = 0; k < l.length; ++k) {
                        if (l[k] > j && l[k] <= m) {
                            ++out;
                        }
                    }
                }
                O += " " + out;
                P.println(O);
            }
        }
        P.close();
    }

    public static int[] diffOrder(int num) {
        String s = "" + num;
        ArrayList<Integer> in = new ArrayList<Integer>();
        int re[];
        for (int i = 0; i < s.length() - 1; ++i) {
            s = s.charAt(s.length() - 1) + "" + s.substring(0, s.length() - 1);
            int y = Integer.parseInt(s);
            String h = "" + y;
            if (h.length() < s.length()) {
                y = 0;
            }
            if (!in.contains(y) && y != 0) {
                in.add(y);
            }
        }
        re = new int[in.size()];
        for (int i = 0; i < in.size(); ++i) {
            re[i] = in.get(i);
        }
        return re;
    }

}