package Main;

import com.sun.deploy.util.ArrayUtil;
import org.apache.commons.lang3.ArrayUtils;

import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;

/**
 * Created with IntelliJ IDEA.
 * User: arran
 * Date: 14/04/12
 * Time: 3:12 PM
 * To change this template use File | Settings | File Templates.
 */
public class Round {
    public StringBuilder parse(BufferedReader in) throws IOException {
        StringBuilder out = new StringBuilder();
        String lineCount = in.readLine();

        for (int i = 1; i <= Integer.parseInt(lineCount); i++)
        {
            out.append("Case #"+i+": ");
            System.err.println("Case #"+i+": ");
            String line = in.readLine();
            String[] splits = line.split(" ");
            int p1 = Integer.valueOf(splits[0]);
            int p2 = Integer.valueOf(splits[1]);
            int r = pairRecyclable(p1, p2);
            out.append(r);

//            if (i < Integer.parseInt(lineCount))
                out.append("\n");
        }
        return out;
    }

    public static int pairRecyclable(int i1, int i2) {
        HashSet<String> hash = new HashSet<String>();
        for (int i = i1; i < i2; i++)
        {
            String istr = String.valueOf(i);
            if (istr.length() < 2) continue;
            for (int p = 0; p < istr.length() ; p++)
            {
                String nistr = istr.substring(p,istr.length()).concat(istr.substring(0,p));
                if (Integer.valueOf(nistr) < i1) continue;
                if (Integer.valueOf(nistr) > i2) continue;
                if (nistr.equals(istr)) continue;
                String cnistr = (Integer.valueOf(nistr) > Integer.valueOf(istr)) ?  istr + "," + nistr : nistr + "," + istr;
                hash.add(cnistr);
            }
        }
        return hash.size();
    }

    public static void main(String[] args) {
        InputStreamReader converter = null;
        try {
            int attempt = 0;
            String quest = "C";
//            String size = "small-attempt";
            String size = "large";
            converter = new InputStreamReader(new FileInputStream("src/resource/"+quest+"-"+size+".in"));
            BufferedReader in = new BufferedReader(converter);
            Round r = new Round();
            String str = r.parse(in).toString();
            System.out.print(str);
            FileOutputStream fos = new FileOutputStream(quest+"-"+size+".out");
            OutputStreamWriter osw = new OutputStreamWriter(fos);
            BufferedWriter bw = new BufferedWriter(osw);
            bw.write(str);
            bw.flush();
            bw.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

import java.util.*;

public class Main{
	static int power(int d)
	{
		if(d== 0) return 1;
		else if(d%2 == 0) 
		{
			int a = power(d/2);
			return a*a;
		}
		else
		{
			int a = power(d/2);
			return a*a*10;
		}
	}
	public static void main(String [] args)
	{
		Scanner in = new Scanner(System.in);
		int T = in.nextInt();
		for(int cc = 1; cc<= T; cc++)
		{
			int A = in.nextInt();
			int B = in.nextInt();
			int Digit = Integer.toString(A).length();
			int tab[] = new int[2000001];
			int base = power(Digit-1);
			for(int i = 0; i<2000001; i++)
			{
				tab[i] = -1;
			}
			for(int i = A; i<B; i++)
			{
				if(tab[i] == -1)
				{
					tab[i] = 1;
					int current = i;
					for(int j = 0; j<Digit-1; j++)
					{
						int a = current%10;
						int b = current/10;
						int next = a*base+b;
						//System.out.println(next);
						if(next >= A && next <=B)
						{
							if(tab[next] == -1)
							{
								tab[next] =0;
								tab[i] ++;
							}
						}
						current = next;
					}
				}
			}
			long res = 0;
			for(int i = A; i<B; i++)
			{
				res += tab[i]*(tab[i]-1)/2;
			}
			System.out.println("Case #"+cc+": "+res);
		}
	}
}