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.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.*;

public class jam3 {

	/**
	 * @param args
	 */
	static int chuli(String s)
	{
		int count = 0;
		String[] ab = s.split(" ");
		int a = Integer.parseInt(ab[0]);
		int b = Integer.parseInt(ab[1]);
		HashSet<String> over = new HashSet<String>();
		HashSet<String> cur = new HashSet<String>();
		for(int i=a;i<=b;i++)
		{
			String is = String.valueOf(i);
			if(!over.contains(is))
			{
				cur.clear();
				String is2 = is+is;
				for(int i2=0;i2<is.length();i2++)
				{
					String ns = is2.substring(i2, i2+is.length());
					int ins = Integer.parseInt(ns);
					if(ins>=a&&ins<=b)
						cur.add(ns);
				}
				count+=(cur.size()*(cur.size()-1))/2;
				over.addAll(cur);
			}
		}
		return count;
	}
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		try{
			/*
	    	System.out.println(chuli("1 9"));
	    	System.out.println(chuli("10 40"));
	    	System.out.println(chuli("100 500"));
	    	System.out.println(chuli("1111 2222"));
		    */
			File fin1 = new File("d:\\C-large.in");
	    	FileInputStream fs1 = new FileInputStream(fin1);
	    	BufferedReader br1 = new BufferedReader(new InputStreamReader(fs1));
	    	
	    	File fout6 = new File("d:\\cjamout1");
	    	FileOutputStream fos6 = new FileOutputStream(fout6);
	    	BufferedWriter wr6 = new BufferedWriter(new OutputStreamWriter(fos6));
	        
	    	String line = br1.readLine();
	    	int n = 1;
	    	line = br1.readLine();
	    	while(line!=null)
	    	{
	    	   if(!line.trim().equals(""))
	    	   {
	    		   wr6.write("Case #"+String.valueOf(n++)+": "+String.valueOf(chuli(line)));
	    	       wr6.newLine();
	    	   }
	    	   line = br1.readLine();
	    	  
			}
	    	br1.close();
	    	fs1.close();
	    	
	    	wr6.close();
	    	fos6.close();
	    	
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}

}
