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 java.io.*;

class Recycle{
public static void main(String arg[])throws Exception
{
File f=new File("C-small-attempt0.in");
FileInputStream fin=new FileInputStream(f);
File f2=new File("bo.txt");
FileOutputStream fout=new FileOutputStream(f2);
BufferedWriter bwr=new BufferedWriter(new OutputStreamWriter(fout));
BufferedReader br=new BufferedReader(new InputStreamReader(fin));
String g="";

int ipn=Integer.parseInt(br.readLine());
int ipni=1;
int a,b;
String e="";
int n,m;
while(--ipn >=0)
{
int count=0;
g=br.readLine();
a=Integer.parseInt(g.substring(0,g.indexOf(" ")) );
b=Integer.parseInt( g.substring(g.indexOf(" ")+1,g.length())) ;

for(int i=a;i<=b;i++)
{
n=i;
	for(int j=0 ; j<(i+"").length()-1; j++)
	{ 
		
		 m=shift(n);
		 if(m>-1)
		if(i<m && m <=b)
		{count++;
		}
		n=m;
		
	}
}


bwr.write("Case #"+(ipni++)+": "+count);
bwr.newLine();
bwr.flush();
}//while

}

public static int shift(int num)
{

	String s;
	if(num<0)
	s="0"+(-num)+"";
	else
	s=num+"";
	String ss=s.charAt(s.length()-1)+s.substring(0,s.length()-1);
	if(s.charAt(s.length()-1)=='0')
	return(-Integer.parseInt(ss));
	return (Integer.parseInt(ss));
}
}