import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;
import java.util.TreeSet;


public class prob2 {
	private static long oneTest(int a, int b){
		boolean [] bool=new boolean[b+1];
		long res=0;
		for(int i=a; i<=b; i++){
			if(bool[i]) continue;
			res+=pairs(i, bool, a, b);
		}
		return res;
	}
	private static long pairs(int j, boolean []bool, int a, int b){
		String str=Integer.toString(j);
		int len=str.length();
		TreeSet<Integer> set=new TreeSet<Integer>();
		for(int i=0; i<=str.length(); i++){
			int c=Integer.parseInt(str);
			if(Integer.toString(c).length()!=len||(c<a||c>b)) {
				str=str.substring(len-1)+str.substring(0,len-1);
				continue;
			}
			str=str.substring(len-1)+str.substring(0,len-1);
			bool[c]=true;
			set.add(c);
			
		}
		long res=set.size();
		res*=(set.size()-1);
		res/=2;
		return res;
	}
	public static void main(String args[]) throws IOException{
		PrintWriter out=new PrintWriter(new FileWriter("result.txt"));
		BufferedReader in=new BufferedReader(new FileReader("C-large.in"));
		//BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
	//	System.out.print(oneTest(10, 40));
		int n=Integer.parseInt(in.readLine());
		for(int i=1; i<=n; i++){
			String str=in.readLine();
			out.print("Case #"+i+": ");
			StringTokenizer tok=new StringTokenizer(str);
			out.print(oneTest(Integer.parseInt(tok.nextToken()), Integer.parseInt(tok.nextToken())));
			out.println();
			System.out.println(i);
		}
		
		out.flush();
		System.out.println("over");
		
	}
}
