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 codezam.exercise.WR1C2012;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import codezam.util.InputFile;

/**
 * Google Code Jam - 2012 RecycledNumbers
 * 
 * Using Frequency analysis method
 * 
 * @author Ryan
 * @since 2012.4.14
 */
public class RecycledNumbers {

	private List lines = new ArrayList();
	
	public RecycledNumbers() {
		String filename = "C:/eclipse/eclipse.test/workspace/CodeZam-Exercise/app/src/codezam/exercise/WR1C2012/C-small-attempt1.in";
		InputFile inputFile = new InputFile();
		inputFile.setFile(filename);

		int numberOfInput = Integer.parseInt(inputFile.readLine());
		
		for (int i = 0; i < numberOfInput; i++) {
			String input = inputFile.readLine();
			lines.add(input);
		}
	}

	public void solve() {
		
		//String output = getOutputForOneLine((String)lines.get(0));
		
		for (int i = 0; i < lines.size(); i++) {
			String output = getOutputForOneLine((String)lines.get(i));

			System.out.println("Case #" + (i + 1) + ": " + output.toLowerCase());
		}
	}

	private String getOutputForOneLine(String line) { 

		String[] lineSplit = line.split(" ");
		
		Long a = new Long(lineSplit[0]);
		Long b = new Long(lineSplit[1]);
		int digit = a.toString().length();
				
		PairNumbers pairNumbers = new PairNumbers();
		
		long from = a.longValue();
		long to = b.longValue();

		int total = 0;
		//System.out.println("from "+a+" to "+b);
		for (long i=from; i<=to; i++) {
			if (i>=449) {
				boolean aa = true;
			}
			String number = new Long(i).toString();
			for (int j=1; j<digit; j++) {
				String checker = number.substring(j,digit)+number.substring(0,j);
				if (!checker.equals(number) && new Long(checker).longValue() >=a && new Long(checker).longValue() <= b 
						&& !pairNumbers.containsKey(number, checker)) {
					pairNumbers.put(number, checker);

					//System.out.print(number+"->"+checker+", ");

					//if (++total%10==0) {
					//	System.out.println();
					//}
				}
			}
		}

		//System.out.println();
		//System.out.println();
		
		return Integer.toString(pairNumbers.size());
	}
	
	/**
	 * @param args
	 */
	public static void main(String[] args) {

		RecycledNumbers question = new RecycledNumbers();

		question.solve();

	}
		
}
