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 mgg.problems;

import java.util.ArrayList;
import java.util.List;

import mgg.utils.FileUtil;
import mgg.utils.Pair;
import mgg.utils.StringUtils;

/**
 * @author manolo
 * @date 14/04/12
 */
public class ProblemC {

	public final static String EXAMPLE_IN = "C-example.in";
	public final static String EXAMPLE_OUT = "C-example.out";

	public final static String C_SMALL_IN = "C-small-attempt0.in";
	public final static String C_SMALL_OUT = "C-small-attempt0.out";

	public final static String C_LARGE_IN= "C-large-practice.in";
	public final static String C_LARGE_OUT = "C-large-practice.out";

	public final static String delim = " ";

	public static String solve(FileUtil util) {

		String line = util.getLine();
		List<Integer> listOfArgs = StringUtils.stringWithIntegersToList(line, delim);

		final int A = listOfArgs.get(0);
		System.out.println("\tA = " + A);

		final int B = listOfArgs.get(1);
		System.out.println("\tB = " + B);

		//ArrayList<Pair> solution = new ArrayList<Pair>();
		int found = 0;
		for(int i = A; i < B ; i++){
			for(int j = A + 1; j <= B ; j++){
				if(i<j){
					if(recicled(i, j)){
						found++;//solution.add(new Pair(i, j));
					}
				}
			}
		}

		//System.out.println("Solution: " + solution);
		System.out.println("Found: " + found);

		return "" + found;
	}

	private static boolean recicled(int n, int m) {

		int numCiphers = numCiphers(n);

		//System.out.println("n: " + n + "(" + numCiphers + ")");

		for(int i = 0; i < numCiphers; i++){
			int aux_n = moveCiphersToFront(n, i, numCiphers);
			//System.out.println("aux_n: " + aux_n);
			
			if(aux_n == m){
				return true;
			}
		}

		return false;
	}

	private static int numCiphers(int n) {
		int result = 0;
		while(n > 0){
			n = n / 10;
			result++;
		}
		return result;
	}

	private static int moveCiphersToFront(int number, int howManyCiphers, int numCiphers) {
		String num = "" + number;

		String newNumber = num.substring(numCiphers-howManyCiphers, numCiphers) +
		num.substring(0, numCiphers-howManyCiphers);

		//System.out.println("new number: " + newNumber);

		return Integer.parseInt(newNumber);
	}

}
