/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package recycled;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.TreeSet;

/**
 *
 * @author Alfred
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
    try {
            FileInputStream fstream = new FileInputStream("C-small-attempt0.in");
            DataInputStream in = new DataInputStream(fstream);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            FileWriter outFile = new FileWriter("out.txt");
            PrintWriter out = new PrintWriter(outFile);
            String line;
            line = br.readLine();
            int cases = Integer.parseInt(line);
            for (int i=1; i<=cases;i++){
                line = br.readLine();
                String[] values = line.split(" ");
                int A = Integer.parseInt(values[0]);
                int B = Integer.parseInt(values[1]);
                int total=0;
                for (int n=A; n<=B;n++){
                    TreeSet<String> solutions = new TreeSet<String>();
                    for (int k=1;k<values[1].length();k++){
                        String m = circshift(n,k);
                        int mVal = Integer.parseInt(m);
                        if(mVal<=B && mVal!=n  && mVal> n && !m.startsWith("0") && m.length()==Integer.toString(n).length() )
                        {
                            solutions.add(m);
                        }                   
                    }
                    total+=solutions.size();
                }
                out.println("Case #"+i+": "+total);
            }
            in.close();
            out.close();
        } catch (Exception e) {//Catch exception if any
            System.err.println("Error: " + e.getMessage());
        }

}

    private static String circshift(int n, int k) {
        String nString=Integer.toString(n);
        int len=nString.length();
        String m =  nString.substring(len-k)+nString.subSequence(0, len-k);
        //System.out.println(n+" "+m);
        return m;
    }

}

package jpt.codejam;

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

public class Codejam2012 {
	static void solve_Qual_B() throws Exception {
		Scanner in = new Scanner(System.in);
		PrintStream out = System.out;
		
		int cases = in.nextInt();
		for (int nCase = 1; nCase <= cases; ++nCase) {
			int N = in.nextInt();
			int S = in.nextInt();
			int p = in.nextInt();
			int res = 0;
			for (int i=0; i<N; ++i) { 
				int t = in.nextInt();

				int max1 = (t+2)/3;
				int max2 = (t+4)/3;
				if (t<=1 || t>=29) max2 = -1;
				
				if (max1 >= p) ++res;
				else if (max2 >= p && S > 0) {
					++res;
					--S;
				}
			}
			out.printf("Case #%d: %d\n", nCase, res);
		}
	}

	
	static void solve_Qual_C() throws Exception {
		Scanner in = new Scanner(System.in);
		PrintStream out = System.out;
		
		int[] ten = new int[8];
		ten[0] = 1;
		for (int i=1; i<ten.length; ++i) ten[i] = ten[i-1]*10;
		
		
		int cases = in.nextInt();
		for (int nCase = 1; nCase <= cases; ++nCase) {
			int A = in.nextInt();
			int B = in.nextInt();
			int res = 0;
			Set<Integer> ms = new HashSet<Integer>();
			for (int n=A; n<=B; ++n) {
				int d = 1;
				for (int aux=10; aux<=n; aux*=10) ++d;
				ms.clear();
				for (int k=1; k<d; ++k) {
					int q = n % ten[k];
					if (q<ten[k-1]) continue;
					int p = n / ten[k];
					int m = q * ten[d-k] + p;
					if (A<=m && B>=m && n!=m && !ms.contains(m)) ++res;
					ms.add(m);
				}
			}
			out.printf("Case #%d: %d\n", nCase, res/2);
		}
	}
	
	public static void main(String[] args) throws Exception {
		//solve_Qual_B();
		solve_Qual_C();
		//solve_1A_A();
		//solve_1A_B();
		//solve_1A_C();
	}
}
