import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.util.HashSet;
import java.util.Set;
import java.util.regex.Pattern;

/**
 * @(#)RecycleNumber.java, 2012-4-14. 
 * 
 * Copyright 2012 Netease, Inc. All rights reserved.
 * NETEASE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

/**
 *
 * @author bjdengdong
 *
 */
public class RecycleNumber {

    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("E:\\google_code_jam\\C-large.in")));
        PrintStream out = new PrintStream(new FileOutputStream("E:\\google_code_jam\\C-large.out"));
        
        int t = Integer.parseInt(br.readLine());
        
        for (int i = 1; i <= t; i++) {
            String line = br.readLine();
            String[] sp = line.split(Pattern.quote(" "));
            int digits = sp[0].length();
            int a = Integer.parseInt(sp[0]), b = Integer.parseInt(sp[1]);
            if (a < 10 && b < 10) {
                out.println("Case #" + i + ": 0");
                continue;
            }
            int result = 0;
            Set<Integer> set = new HashSet<Integer>();
            for (int num = a; num <= b; num++) {
                String str = ("" + num);
                set.clear();
                for (int j = digits - 1, k = 1; j >= 1; j--, k++) {
                    if (str.charAt(k) == '0')
                        continue;
                    int rec = Integer.parseInt(str.substring(k)
                            + str.substring(0, k));
                    if (rec > num && rec <= b) {
                        if(!set.contains(rec)){
                            set.add(rec);
                            result++;
                        }
                    }
                }
            }
            out.println("Case #" + i + ": " + result);
        }
        
    }

}
