import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeSet;

// Recycled Numbers
// https://code.google.com/codejam/contest/1460488/dashboard#s=p2

public class C {

	private static String process(Scanner in) {
		int A = in.nextInt();
		int B = in.nextInt();
		int res = 0;
		int len = Integer.toString(A).length();
		for(int n = A; n < B; n++) {
			String str = Integer.toString(n);
			TreeSet<Integer> set = new TreeSet<Integer>();
			for(int i = 1; i < len; i++) {
				int m = Integer.parseInt(str.substring(i, len) + str.substring(0, i));
				if ( m > n && m <= B && ! set.contains(m) ) {
					set.add(m);
					res++;
				}
			}
		}
		return Integer.toString(res);
	}

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in.available() > 0 ? System.in : 
			new FileInputStream(Thread.currentThread().getStackTrace()[1].getClassName() + ".practice.in"));
		int T = in.nextInt();
		for(int i = 1; i <= T; i++) 
			System.out.format("Case #%d: %s\n", i, process(in));
	}
}

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Scanner;
import java.util.StringTokenizer;
import java.util.TreeSet;


public class Recycle {
	static TreeSet<Integer> set = new TreeSet<Integer>();
	public static void main(String[] args) {
		System.out.println("\t****** Recycle numbers ******");
		long start = System.currentTimeMillis();
		String tokenStr;
		int test;int y=0,a=0,b=0;
		
		try {
			BufferedReader in = new BufferedReader(new FileReader("C-small-attempt0.in"));
			PrintWriter out = new PrintWriter(new FileWriter("C-small-output0.txt"));
			//read the first line of the file
			test = Integer.parseInt(in.readLine());
			for(int i = 1; i <= test; i++) {
				tokenStr = in.readLine();
				StringTokenizer tok = new StringTokenizer(tokenStr);
				a = Integer.parseInt(tok.nextToken());
				b = Integer.parseInt(tok.nextToken()); 
				/////////////
				set.clear();y=0;	
				for (int j=a;j<=b;j++) {
				  if (set.contains(j)) continue; 
				  y += group(j,a,b); 	
				}
			    ///////////////
			    out.println("Case #" + i +": " +y);
			}//for
			out.flush();out.close();in.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		
		long time = System.currentTimeMillis()-start;
		System.out.println("time = "+time);
	}

	private static int group(int j, int a, int b) {
		String s = String.valueOf(j);
		boolean zero=false;
		int len = s.length(); int msb = (int) Math.pow(10, (len-1));  
		int n=j;int count=0;
		for (int i=0;i<len;i++) {
		  if (zero)
			  zero=false; //salto n attuale in quanto ha leading zero
		  else if (n>=a && n<=b) {
			if (!set.contains(n)) {
				set.add(n);
				count++;
			}
		  }
		  //calcolo prox giro.
			int r = n %10;
			zero = (r==0);//se leading zero salto a prox iterazione 
			n = n/10 + r*msb;
		}
		return count*(count-1)/2; // nume coppie combinazioni di count su 2
	}
}
