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.*;
import java.io.*;

public class C2 {
	public static String convert(int num) {
		char[] arr = Integer.toString(num).toCharArray();
		Arrays.sort(arr);
		return new String(arr);
	}
	
	// count lower than A
	public static long countRecycle(int A, int num) {
		//long ans = 0;
		
		StringBuffer s = new StringBuffer(Integer.toString(num));
		HashSet<Integer> set = new HashSet<Integer>();
		for(int i=0;i<s.length(); i++) {
			char c = s.charAt(0);
			s = s.deleteCharAt(0);
			s = s.append(c);
			
			int anotherNum = Integer.parseInt(s.toString());
			if (anotherNum >= A && anotherNum < num){ 
				//System.out.println("RECYCLED: "+num+" "+anotherNum);
				//++ans;
				set.add(anotherNum);
			}
		}
		
		return set.size();
	}
	
	public static void main(String[] args) throws Exception{
		Scanner in = new Scanner(System.in);
		int T = in.nextInt();
		
		int A, B;
		long ans;
		
		for(int caseNo = 1;caseNo <= T; caseNo++) {
			A = in.nextInt();
			B = in.nextInt();
			ans = 0;
			
			for(int num = A; num <= B; num++) {
				ans += countRecycle(A, num);
			}
				
			System.out.println("Case #"+caseNo+": "+ans);
		}
	}
}