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.io.*;
import java.util.*;
import java.math.*;
public class Qual22C
{
	public static void main(String[] args) throws IOException
	{
		BufferedReader ips=new BufferedReader(new FileReader("C-large.in"));
		PrintWriter ops=new PrintWriter(new FileWriter("recno.in"));
		int T=Integer.parseInt(ips.readLine());
		for(int i=0;i<T;i++)
		{
			String line=ips.readLine();
			char[] ca=line.toCharArray();
			int count=0,j=0, t=0, A=0, B=0, rnc=0, n=0, m=0, rev=0, temp=0, tryy=0;
			for(j=ca.length-1; ca[j]!=' '; j--)
			{
				t=ca[j]-'0';
				B=B+(int)(Math.pow(10,count)*t);	
				count++;
			}
			j--;
			count=0;
			for(; j>=0; j--)
			{
				t=ca[j]-'0';
				A=A+(int)(Math.pow(10,count)*t);	
				count++;
			}
			//System.out.println("A: "+A+" B: "+B+" nog: "+count);
			n=A;
			int pw=0;
			for(int k=0; k<=(B-A); k++)
			{
				//n++;
				m=n;
				temp=m;
				rev=0;
				pw=0;
				while(temp!=0)
				{
					t=temp%10;
					rev=(rev*10)+t;
					temp=temp/10;
					pw++;
				}
				//System.out.println(rev);
				t=rev%10;
				tryy=(t*(int)(Math.pow(10,(count-1))));
				m=((m-tryy)*10)+t;
				//System.out.println(n+" : "+m);
				while(m!=n)
				{
					if(n<m && m>=A && m<=B)
						rnc++;
					temp=m;
					rev=0;
					pw=0;
					while(temp!=0)
					{
						t=temp%10;
						rev=(rev*10)+t;
						temp=temp/10;
					}
					//System.out.println(rev);
					t=rev%10;
					tryy=(t*(int)(Math.pow(10,(count-1))));
					//System.out.println(t);
					//System.out.println(tryy);
					if((m-tryy)<0)
						m=(m*10);
					else
						m=((m-tryy)*10)+t;
					//System.out.println("1. "+n+" : "+m);
				}
				n++;
			}
			ops.println("Case #"+(i+1)+": "+rnc);	
				
			System.out.println("Case #"+(i+1)+": "+rnc);	
		}
		ips.close();
		ops.close();
	}
}