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.File;
import java.io.FileInputStream;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;


public class RecycledNumbers {

	public static void main(String[] args) {
		try {
			File output = new File("output.txt");
			
			if (output.exists()) {
				output.delete();
			}
			
			PrintWriter pw = new PrintWriter(output);
			
			Scanner s = new Scanner(new FileInputStream("input.txt"));
		
			int T = s.nextInt();
			s.nextLine();
			
			for (int c = 0; c < T; c++) {
				int start = s.nextInt();
				int end = s.nextInt();
				
				int digits = digits(start);
				
				System.out.println(String.format("%d - %d (%d)", start, end, digits));
				
				int found = 0;
				
				for (int n = start; n < end; n++) {
					int m = n;
					HashSet<Integer> pairs = new HashSet<>();
					for (int i = 0; i < digits; i++) {
						m = rotate(m, digits);
						
						if (m <= n) continue;
						
						if (m >= start && m <= end && !pairs.contains(m)) {
							pairs.add(m);
							found++;
							//System.out.println(String.format("%d - %d", n, m));
						}
					}
				}
				
				// 
				

				pw.println(String.format("Case #%d: %d", (c+1), found));
				
				System.out.println(String.format("Found %d numbers", found));
				
				
				System.out.println("---------------------");
			}
			
			// Read inputs and solve here
			
			pw.close();
			
			System.out.println("Done !");
			
			System.out.println(String.format("51234 rotated to %d", rotate(51234, 5)));
		} catch (Exception ex) {
			System.out.println("ERROR");
			System.out.println(ex.getMessage());
			ex.printStackTrace();
		}
	}
	
	private static int digits(int n) {
		int d = 0;
		while (n > 0) {
			n /= 10;
			d++;
		}
		return d;
	}
	
	private static int rotate(int m, int digits) {
		if (digits == 1) return m;
		
		int left = m%10;
		
		m /= 10;
		
		m += left * (int)Math.pow(10, digits-1);
		
		return m;
	}
	
	public RecycledNumbers() {
	}
}
