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.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Set;



public class CRecycledNumbers {
	
	static int recycle(int a, int b) {
//		System.out.println("-------------------------");
//		System.out.println(a + " " + b);
		int count = 0;
		Set<String> used = new HashSet<String>();
		for(int i = a; i < b; ++i) {
			String s = Integer.toString(i);
			for(int j = 1; j < s.length(); ++j) {
				String pre = s.substring(0, j);
				String suf = s.substring(j);
				if(suf.startsWith("0")) continue;
				int c = Integer.parseInt(suf + pre);
				if(c <= b && c != i && i < c) {
					String p = i < c? (i + "-" + c) : (c + "-" + i);
					if(!used.contains(p)) {
						used.add(p);
//						System.out.println(p);
						++count;
					}
				}
			}
			
		}
		
		return count;
	}
	
	public static void main(String[] args) throws NumberFormatException, IOException {
		String filename = "C-large.in";
		BufferedReader r = new BufferedReader(new FileReader(filename));
		int n = Integer.parseInt(r.readLine());
		PrintWriter p = new PrintWriter("c.out");
		for(int i = 0; i < n; ++i) {
			String[] test = r.readLine().split(" ");
			int j = i + 1;
			p.println("Case #" + j + ": " +  recycle(Integer.parseInt(test[0]), Integer.parseInt(test[1])));
			
		}
		p.flush();
		p.close();
	}

}
