import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class CopyOfCopyOfMain {

	static int ndigits(int n) {
		return (int) (Math.log10(n) + 1);
	}

	static int rot(int n, int dig) {
		return (int) ((n % 10) * Math.pow(10, dig - 1)) + (int) (n / 10);
	}

	public static void main(String[] args) throws FileNotFoundException {
		String file = "C-large";
		Scanner in = new Scanner(new File(file + ".in"));
		PrintWriter out = new PrintWriter(new File(file + ".out"));

		int T = in.nextInt();
		for (int t = 1; t <= T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();

			int c = 0;
			int[] list = new int[ndigits(B)];
			numbers: for (int i = A; i <= B; i++) {
				int digs = ndigits(i);
				int rot = i;
				int pairs = 0;

				Arrays.fill(list, -1);
				list[0] = i;

				digits: for (int j = 1; j <= digs + 1; j++) {

					rot = rot(rot, digs);
					if(rot < i)
						continue;

					if (A <= rot && rot <= B) {
						for (int k = 0; k < j; k++) {
							if (list[k] == rot) {
								continue digits;
							}
						}
						pairs++;
						list[j] = rot;
					}
				}

				//c += pairs * (pairs + 1) / 2;
				c += pairs ;
				// c+=digs;
			}
			out.println("Case #" + t + ": " + c);
		}

		in.close();
		out.close();
	}
}

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashSet;


public class Recycled {
	private static int NN = 2000010; 
	private static BufferedReader bf;
	private static File f;
	
	public static void main(String[] args) throws Exception {
		f = new File("rasdjfh.in");
		FileWriter out = new FileWriter(new File("recycled.txt"));
		if(f.exists())
			bf = new BufferedReader(new FileReader(f));
		else 
			bf = new BufferedReader(new InputStreamReader(System.in));
		String line = "", pars[],s ,x;
		ArrayList<HashSet<Integer>> recycled = new ArrayList<HashSet<Integer>>(NN);
		for(int i=0;i<NN;i++)
		{
			s = ""+i;
			recycled.add(new HashSet<Integer>());
			for(int j=1;j<s.length();j++)
			{
				x = s.substring(0, j);
				x = s.substring(j)+x;
				Integer I;
				if((I = Integer.parseInt(x)) > i)
					recycled.get(i).add(I);
			}
		}
		System.out.println("Ok, I'm readyÉ");
		int T = Integer.parseInt(bf.readLine()),  A , B;
		for(int t=1;t<=T;t++)
		{
			pars = bf.readLine().split("[ ]+");
			A = Integer.parseInt(pars[0]);
			B = Integer.parseInt(pars[1]);
			int ans = 0;
			for(int i=A;i<=B;i++)
			{
				for(Integer j : recycled.get(i))
					if(j >= A && j <=B)
						ans++;
			}
			out.write(String.format("Case #%d: %d\n",t,ans));
		}
		out.close();
	}
}
