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.util.ArrayList;
import java.util.HashSet;
import java.util.Scanner;
import java.util.TreeSet;


public class C {
	
	public ArrayList<Integer> hash = new ArrayList<Integer>();
	
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int t = scanner.nextInt();
		for (int i = 0; i < t; i++) {
			C c = new C();
			int y = 0;
			int A = scanner.nextInt();
			int B = scanner.nextInt();
			for (int j = A; j <= B; j++) {
//				if(!c.hash.contains(j)) {
//					System.out.println("j="+j);
					y += c.permut(j, A, B);
//				}
			}
			System.out.println("Case #"+(i+1)+": "+y);
		}
	}
	
	public int permut(int j, int A, int B) {
		int y = 0;
		String sj = ""+j;
		int newJ = 0;
		while(newJ != j) {
			char lastDigit = sj.charAt(sj.length()-1);
			String frontNumber = sj.substring(0, sj.length()-1);
			sj = lastDigit + frontNumber;
			newJ = Integer.parseInt(sj);
//			System.out.print(newJ);
			if(newJ >= A && newJ <= B  && newJ > j) {
				y++;
//				if(!hash.contains(newJ)) {
//					hash.add(newJ);
//					System.out.print(" p");
//				}
			}			
//			System.out.println();
		}
//		System.out.println();
		return y;
	}

}
