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 googleJam;

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

public class RecycledNumbers 
{

	public static void main(String[] args) 
	{
		Scanner scan = null;
		try
		{
			scan = new Scanner(new File(args[0]));
		}
		catch (FileNotFoundException e)
		{
			System.err.println("File not found!");
			return;
		}
		if (!scan.hasNext())
		{
			System.err.println("Nothing in File!");
			return;
		}
		int testCases = Integer.parseInt(scan.nextLine());
		int lower;
		int upper;
		int move;
		int d;
		int total;
		int zeroes;
		int num = 1;
		int first;
		HashSet<Integer> set;
		while(scan.hasNext())
		{
			System.out.print("Case #" + num + ": ");
			total = 0;
			lower = scan.nextInt();
			upper = scan.nextInt();
			for (int x = lower; x <= (upper); x++)
			{
				set = new HashSet<Integer>();
				zeroes = 1;
				move = x;
				while (move > 9)
				{
					move = move/10;
					zeroes = zeroes * 10;
				}
				int limit = zeroes;
				for(int n = 10; n < (limit*10); n = n * 10)
				{

					move = x/n;
					d = x % n;
					d = d * zeroes;
					d = d + move;
					zeroes = zeroes / 10;
					if (d < x && d >= lower && !set.contains(d) && d > 9)
					{
						total++;
						//System.out.println(d + " , " + x);
						set.add(d);
					}
				}
			}
			num++;
			System.out.print(total);
			if (scan.hasNext())
			{
				System.out.println();				
			}
		}
	}

}
