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.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;


public class CodeJam
{
	public static void main(String[] args) throws Exception
	{
		File input=new File("input.txt");
		BufferedReader bufferedReader=new BufferedReader(new FileReader(input));
		String output="";
		String line=null;
		int lineCount=0;
		
		int caseNumbers=0;
		String solutionString="";
		while((line=bufferedReader.readLine())!=null)
		{
			if(lineCount==0)
			{
				caseNumbers=Integer.parseInt(line);
			}
			else
			{
				int solution=0;
				String[] split=line.split(" ");
				int a=Integer.parseInt(split[0]);
				int b=Integer.parseInt(split[1]);
				int n=a;
				int m=b;
				while(n<m)
				{
					while(n<m)
					{
						if(workout(n, m))
						{
							solution++;
						}
						n++;
					}
					n=a;
					m--;
				}
				solutionString=solutionString+"Case #"+Integer.toString(lineCount)+": "+Integer.toString(solution)+"\n";
			}
			lineCount++;
		}
		System.out.print(solutionString);
	}
	
	public static boolean workout(int n,int m)
	{
		boolean solution=false;
		String t=Integer.toString(n);
		char[] test=t.toCharArray();
		int count=1;
		while(count<=test.length)
		{
			String testString=new String(test);
			
			if(testString.equals(Integer.toString(m)))
			{
				solution=true;
			}
			char x=test[test.length-1];
			int count2=test.length-2;
			while(count2>=0)
			{
				test[count2+1]=test[count2];
				count2--;
			}
			test[0]=x;
			count++;
		}
		return solution;
	}

}
