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.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;


public class C {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		BufferedReader br= new BufferedReader(new FileReader(args[0]));
		BufferedWriter bw= new BufferedWriter(new FileWriter(args[0]+".out"));
		String line= br.readLine();
		int cases= Integer.parseInt(line);
		for (int i= 0; i != cases; i++) {
			Scanner sc= new Scanner(br.readLine());
			bw.write("Case #"+(i+1)+": "+recycle(sc.nextInt(), sc.nextInt())+"\n");
		}
		br.close();
		bw.close();
	}
	
	public static int recycle(int a, int b) {
		int pairs= 0;
		for (int n= a; n != b; n++) {
			char[] num= (""+n).toCharArray();
			for (int i= 0; i != num.length-1; i++) {
				char[] rec= new char[num.length];
				rec[0]= num[num.length-1];	// put last digit at beginning
				for (int j= 0; j != num.length-1; j++) rec[j+1]= num[j];
				num= rec;
				int m= Integer.parseInt(new String(num));
				if (m > n && m <= b) {
					pairs++;
					//System.out.println(q+" "+n);
				}
			}
		}
		return pairs;
	}

}
