import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Q3M {
	public static void main(String[] args) throws Exception {
		compute();
	}

	private static void compute() throws Exception {
		BufferedReader br = new BufferedReader(new FileReader(new File(
				"C:\\work\\Q3\\C-small-attempt0.in")));
		String line = null;
		int i = Integer.parseInt(br.readLine());
		List l = new ArrayList();
		for (int j = 0; j < i; j++) {
			line = br.readLine();
			String[] nums = line.split(" ");
			l.add(calculate(nums));
		}
		writeOutput(l);
	}

	private static int calculate(String[] nums) {
		int min = Integer.parseInt(nums[0]);
		int max = Integer.parseInt(nums[1]);
		int count = 0;
		List l = new ArrayList();
		for (int i = min; i <= max; i++) {
			for (int times = 1; times < countDigits(i); times++) {
				int res = shiftNum(i, times);
				if (res <= max && i < res) {
					if ((!l.contains((i + ":" + res)))) {
						l.add(i + ":" + res);
						l.add(res + ":" + i);
						count++;
					}
				}
			}
		}
		return count;
	}

	private static boolean checkZeros(int temp, int res) {
		if (temp % 10 == 0 || res % 10 == 0)
			return false;
		return true;
	}

	private static int shiftNum(int n, int times) {
		int base = (int) Math.pow(10, times);
		int temp2 = n / base;
		int placeHolder = (int) Math.pow((double) 10,
				(double) countDigits(temp2));
		int res = placeHolder * (n % base) + temp2;
		if (countDigits(res) == countDigits(n)) {
			return res;
		} else {
			return 2000001;
		}
	}

	public static int countDigits(int x) {
		if (x < 10)
			return 1;
		else {
			return 1 + countDigits(x / 10);
		}
	}

	private static void writeOutput(List l) throws Exception {
		StringBuffer b = new StringBuffer();
		int i = 1;
		BufferedWriter br = new BufferedWriter(new FileWriter(new File(
				"C:\\work\\Q3\\ans.txt")));
		for (Iterator iterator = l.iterator(); iterator.hasNext();) {
			br.write("Case #" + i++ + ": " + iterator.next());
			br.newLine();
		}
		br.close();
	}

}
import static java.lang.System.*;
import java.util.*;
import java.io.*;
public class jellyfish {
	public static void one()throws IOException{
		TreeMap<String,String>t=new TreeMap<String,String>();
		Scanner keyb=new Scanner(new File("A-small-attempt2.in"));
		t.put("a","y");
		t.put("o","e");
		t.put("z","q");
		t.put("q","z");
		t.put("i","k");
		String a="ejp mysljylc kd kxveddknmc re jsicpdrysirbcpc ypc rtcsra dkh wyfrepkym veddknkmkrkcdde kr kd eoya kw aej tysr re ujdr lkgc jv";
		String b="our language is impossible to understandthere are twenty six factorial possibilitiesso it is okay if you want to just give up";
		String c[]=a.split("");
		String d[]=b.split("");
		for(int x=1;x<c.length;x++){
			t.put(c[x],d[x]);
		}
		int f=Integer.parseInt(keyb.nextLine());
		for(int x=1;x<=f;x++){
		String e=keyb.nextLine();	
		String g="";
		for(int y=0;y<e.length();y++){
			g+=t.get(e.substring(y,y+1));
		}
		out.println("Case #"+x+": "+g);}
	}
	public static void two() throws IOException{
		Scanner keyb=new Scanner(new File("pi.txt"));
		int a=keyb.nextInt();
		int b=keyb.nextInt();
		int c=keyb.nextInt();	
		String e[][]=new String[a][b];
		int z1=-1,z2=-1;
		for(int x=0;x<a;x++){
			String d[]=keyb.nextLine().split("");
			for(int y=1;y<d.length;y++){
				e[x][y-1]=d[y];
				if(e[x][y-1].equals("X")){
					z1=x;
					z2=y-1;
				}
			}
		}
		for(int x=0;x<a;x++){
			for(int y=0;y<b;y++){
				if(e[x][y].equals("#")){
					
				}
			}
		}
	}
	public static void three() throws IOException{
		Scanner keyb=new Scanner(new File("C-small-attempt0.in"));
		int a=Integer.parseInt(keyb.nextLine());
		for(int b=1;b<=a;b++){
			int c=keyb.nextInt();
			int d=keyb.nextInt();
			TreeSet<String>t=new TreeSet<String>();
			for(int x=c;x<d;x++){
				String g=Integer.toString(x);
				for(int y=g.length()-1;y>0;y--){
					String l="";
					l+=g.substring(y,g.length());
					l+=g.substring(0,y);
					int q=Integer.parseInt(l);
					String s=Integer.toString(q);
					if(s.length()==g.length()&&x<q&&q<=d){
						t.add(g+"_"+s);
					}
				}
			}
			out.println("Case #"+b+": "+t.size());
		}
	}
	public static void main(String []args)throws IOException{
		three();
			
			
	}
}
