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();
    }
}

package google.contest.A;

import google.loader.Challenge;
import google.problems.AbstractChallenge;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class AChallenge extends AbstractChallenge implements Challenge {

	private String text;
	private static Map<String, String> map;

	public AChallenge(int number, String line) {
		super(number);
		text = line;
		initTranslationMap();
		setResult(translate());
	}

	private String translate() {
		String res="";
		for(int i=0;i<text.length();i++){
			res=res+map.get(String.valueOf(text.charAt(i)));
		}
		return res;
	}

	private void initTranslationMap() {
		if(map==null){
			map = new HashMap<String, String>();

			String  input="ejp mysljylc kd kxveddknmc re jsicpdrysirbcpc ypc rtcsra dkh wyfrepkym veddknkmkrkcdde kr kd eoya kw aej tysr re ujdr lkgc jv";
			String output="our language is impossible to understandthere are twenty six factorial possibilitiesso it is okay if you want to just give up";

			for(int i=0;i<input.length();i++){
				map.put(String.valueOf(input.charAt(i)),String.valueOf(output.charAt(i)));
			}
			map.put("q","z");
			map.put("z","q");
		}
	}


}
