import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class RecycledNumbers {
	
	public static void main(String[] argv) throws Exception {
//		Scanner s = new Scanner(System.in);
		Scanner s = new Scanner(new FileInputStream("RecycledNumbers/C-large.in"));
		PrintWriter pw = new PrintWriter(new FileOutputStream("RecycledNumbers/C-large.out"));
//		PrintWriter pw = new PrintWriter(System.out);
		
		int T = s.nextInt();
		for(int i=1;i<=T;i++) {
			int A = s.nextInt();
			int B = s.nextInt();
			Set<Integer> checked = new HashSet<Integer>();
			int numDigit = Integer.toString(A).length();
			int pairs = 0;
			for(int j = A; j<=B; j++) {
				if(checked.contains(j)) continue;
				checked.add(j);
				int[] digits = new int[numDigit];
				for(int k = 0;k < numDigit;k++) {
					digits[k] = (j / powers[k]) - (j / powers[k+1])*10;
				}
//				System.out.println(Arrays.toString(digits));
				int count =0;
				for(int k =1; k< numDigit;k++ ){
					shift(digits);
					int newnum = 0;
					for(int l=0;l<numDigit;l++) {
						newnum += digits[l]*powers[l];
					}
					if(!checked.contains(newnum)) {
						checked.add(newnum);
						if(newnum >= A && newnum <=B) {
							count++;
						}
					}
				}
				if(count >= 1) {
					pairs += (count+1)*(count)/2;
				}				
			}
			pw.println("Case #" + i +": " + pairs);
			System.out.println("Case #" + i +":" +pairs);
		}
		pw.flush();
		pw.close();
	}
	static int[] powers = new int[8];

	static 
	{
		for(int j=0;j<powers.length;j++) {
			powers[j] = pow(10,j);	
		}

	}
	static int pow(int a, int b) {
		if(b == 1) return a;
		if(b == 0) return 1;
		if(b%2 == 0) {
			int r = pow(a,b/2);
			return r*r;
		} else {
			return pow(a,b-1)*a;
		}
	}
	private static void shift(int[] digits) {
		int tmp = digits[0];
		for(int i=0;i<digits.length-1;i++) {
			digits[i] = digits[i+1];
		}
		digits[digits.length-1] = tmp;
	}

}
