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();
	}
}

package com.ivantod.codejam2012;

import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class Numbers {

	private void process() throws Exception {
		
		Scanner s=new Scanner(System.in);
		int numCases=s.nextInt();
		s.nextLine();

		for (int ca=1; ca<=numCases; ca++) {
			int A=s.nextInt();
			int B=s.nextInt();
			Set<String> pairs=new HashSet<String>();
			
			for (int i=A; i<=B; i++) {
				String num=Integer.toString(i);
				String flip=Integer.toString(i);
				for (int j=num.length(); j>1; j--) {
					flip=flip.charAt(flip.length()-1)+flip.substring(0,flip.length()-1);
					if (!flip.startsWith("0") && !num.equals(flip) &&
							!pairs.contains(num+"_"+flip) && !pairs.contains(flip+"_"+num) &&
							Integer.parseInt(flip) >= A && Integer.parseInt(flip) <= B) {
						pairs.add(num+"_"+flip);
					}
				}
				
			}
			
			System.out.println("Case #"+ca+": "+pairs.size());
		}
	}
	
	
	public static void main(String[] args) {
		Numbers b=new Numbers();
		try {
			b.process();

		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}