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();
	}

}

/**
 * Shashank Gupta
 * 
 * ****SinnerShanky****
 */
import java.io.*;
public class problem_C
{
    void main()
    {
        try
        {
           FileReader fr=new FileReader("C:\\USERS\\SHASHANK GUPTA\\DOWNLOADS\\C-small-attempt0.in");
           BufferedReader br=new BufferedReader(fr);
           int n=Integer.parseInt(br.readLine());
           for(int i=1;i<=n;i++)
           {
               int count=0;
               String s=br.readLine();
               int b=0;
               int a=0;
               for(int j=0;j<s.length();j++)
                 {
                   if(s.charAt(j)==' ')
                   {
                     a=Integer.parseInt(s.substring(0,j));
                     b=Integer.parseInt(s.substring(j+1,s.length()));
                     j=s.length();
                   }
                  }
                  for(int j=a;j<b;j++)
                  {
                      for(int k=j+1;k<=b;k++)
                      {
                          String temp=Integer.toString(j);
                          if(check(temp,k)==true)
                          count++;
                        }
                  }
                  System.out.println("Case #"+i+": "+count);
           }
            fr.close();
        }
        catch(Exception e)
        {
            System.err.println(e);
        }
    }
    boolean check(String s, int b)
    {
        String s1="";
        for(int i=s.length()-1;i>=0;i--)
        {
            s1=s.substring(0,i);
            s1=s.substring(i)+s1;
            int a=Integer.parseInt(s1);
            if(a==b)
            return true;
        }
        return false;
    }
        
}
