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 com.abuhijleh.googlejam;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class GoogleJam {
	static final String code = "yhesocvxduiglbkrztnwjpfmaq";

	public static void main(String[] args) {
		File input = new File("inputFile");
		String[] result;
		Scanner scan;
		try {
			scan = new Scanner(input);
			result = new String[scan.nextInt()];
			scan.nextLine();
			for (int i = 0; i < result.length; i++) {
				result[i] = "Case #" + (i + 1) + ": "
						+ solve(scan.nextInt(), scan.nextInt());
				scan.nextLine();
			}
			System.out.println("Output");
			for (int i = 0; i < result.length; i++)
				System.out.println(result[i]);
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	private static int solve(int x, int y) {
		int count = 0;
		String digits = x + "";
		int length = digits.length();
		int pa = (int) Math.pow(10, length - 1);
		for (int i = x; i <= y; i++) {
			int temp = i;
			int[] temps = new int[length];
			for (int j = 0; j < length ; j++) {
				temp = (temp % 10) * pa + (temp / 10);
				if (temp > i && temp <= y){
					if(check(temps,temp)){
						temps[j] = temp;
						count++;
					}
				}
			}
		}
		return count;
	}

	private static boolean check(int[] temps, int temp) {
		for(int i =0 ;i<temps.length;i++)
			if(temps[i] == temp)
				return false;
		return true;
	}
}
