import java.util.*;
import java.lang.*;
import java.math.*;
import java.io.*;

import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.util.Collections.*;

public class C{
	Scanner sc=new Scanner(System.in);

	int INF=1<<28;
	double EPS=1e-9;

	int caze, T;
	int A, B;

	void run(){
		T=sc.nextInt();
		for(caze=1; caze<=T; caze++){
			A=sc.nextInt();
			B=sc.nextInt();
			solve();
		}
	}

	void solve(){
		int ans=0;
		for(int n=A; n<=B; n++){
			int digit=(int)(log10(n)+EPS);
			int d=(int)pow(10, digit);
			// debug("n", n);
			for(int m=rot(n, d); m!=n; m=rot(m, d)){
				// debug("m", m);
				if(n<m&&m<=B){
					ans++;
				}
			}
		}
		answer(ans+"");
	}

	int rot(int n, int d){
		return n/10+n%10*d;
	}

	void answer(String s){
		println("Case #"+caze+": "+s);
	}

	void println(String s){
		System.out.println(s);
	}

	void print(String s){
		System.out.print(s);
	}

	void debug(Object... os){
		System.err.println(deepToString(os));
	}

	public static void main(String[] args){
		try{
			System.setIn(new FileInputStream("dat/C-small.in"));
			System.setOut(new PrintStream(new FileOutputStream("dat/C-small.out")));
		}catch(Exception e){}
		new C().run();
		System.out.flush();
		System.out.close();
	}
}

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashMap;
import java.util.Vector;


public class qual3 {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			FileReader fr = new FileReader("C:\\Users\\zyra\\Desktop\\codejam\\qual3.txt");
			BufferedReader br = new BufferedReader(fr);
			String line;
			int A;
			int B;
			line = br.readLine();
			int count = Integer.parseInt(line);
			int[] output = new int[count];
			Vector<String> poss = new Vector<String>();
			Vector<String> posses = new Vector<String>();
			for(int hh=0; hh<count; hh++){
				posses.clear();
				line = br.readLine();
				
				String[] split =line.split(" ");
				A = Integer.parseInt(split[0]);
				B = Integer.parseInt(split[1]);
				
				//System.out.println(A+" "+B);
				
				int recycled = 0;
				
				for(int m=A; m<=B; m++){
					String mStr = String.valueOf(m);
					/*
					//no leading zeros
					if(m%10 == 0){
						continue;
					}*/
					//no mirror integers, n and m uniqueness
					
					Boolean valid = false;
					for(int p=0; p<mStr.length(); p++){
						if(mStr.charAt(p) != mStr.charAt((p+(mStr.length()-1))%mStr.length())){
							valid = true;
							break;
						}
					}
					if(valid == false)
						continue;
					
					
					for(int q=1; q<mStr.length(); q++){
						String rev = reverse(mStr, q);
						if(rev.charAt(0) == '0' || mStr.equals(rev)){
							continue;
						}
						int num = Integer.parseInt(rev);
						
						if(num <= B && num>=A && posses.contains(mStr+","+rev)!=true && 
								posses.contains(rev+","+mStr)!=true)
						{
							recycled++;
							posses.add(mStr+","+rev);
							posses.add(rev+","+mStr);
							//System.out.println(m+" "+num);
						}
					}
					
					
				}
				System.out.println("*************");
				poss.add(String.valueOf(recycled));
			}
			fr.close();
			br.close();
			
			
			FileWriter fw = new FileWriter("C:\\Users\\zyra\\Desktop\\codejam\\out1.txt");
			for(int i=0; i<count; i++){
				String out = "Case #"+(i+1)+": "+poss.elementAt(i);
				
				System.out.println(out);
				fw.write(out+"\r\n");
			}
			fw.flush();
			fw.close();
			
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	public static String reverse(String input, int number){
		String toRet = "";
		
		String sub = input.substring(number);
		String sub2 = input.substring(0, number);
		toRet = sub+sub2;
		
		return toRet;
	}
	
}