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();
	}

}
package code.jam;

import java.io.*;
import java.util.*;

public class CodeJam {
    
    public static void main(String[] args) throws FileNotFoundException, IOException {
        
        String name = "test";
        
        Scanner in = new Scanner( new BufferedReader( new FileReader(name + ".in") ) );
        BufferedWriter out = new BufferedWriter( new FileWriter(name + ".out") );
        
        int req_count;
        int seed , count  = 0, factor , temp;
        int c2;
        int i , j , k = 1;
        int[] parts = null;
        boolean[] arr = null;
        
        int N = in.nextInt();
        
        while(in.hasNext())
        {
            int start = in.nextInt();
            int end = in.nextInt();
            req_count = 0;
            
            arr = new boolean[end+1];
            
            filterArray(arr);
            
            for(i=start ; i<end ; i++)
            {
                if(!arr[i])
                {
                    seed = i;
                    count = digitsCount(seed);
                    
                    if(count > 2)
                    {
                        parts = new int[count-1];
                        factor = 10;

                        for(j=(count-2) ; j >= 0 ; j--)
                        {
                            parts[j] = seed/factor;
                            factor = factor*10;
                        }
                        
                        for(j=1 ; j<=parts.length ; j++)
                        {
                            factor = (int)Math.pow(10,count-j);
                            temp = seed%factor;
                            temp = temp*((int)Math.pow(10,j))+parts[j-1];
                            
                            c2 = digitsCount(temp);
                            
                            if(count == c2)
                            {
                                if( (temp >= start) && (temp <= end) )
                                {
                                    if(!arr[seed])
                                        arr[seed] = true;
                                    
                                    if(!arr[temp])
                                        req_count++;
                                }
                            }
                        }
                    }
                    else if(count == 2)
                    {
                        temp = seed%10;
                        temp = (temp*10)+(seed/10);
                        
                        if( (temp >= start) && (temp <= end) )
                        {
                            req_count++;
                            arr[temp] = true;
                            arr[seed] = true;
                        }
                    }
                }
            }
            
            out.write("Case #" + k + ": " + req_count);
            out.newLine();
            k++;
        }
        
        out.close();
    }
    
    //----------------------------------------------------------------------
    
    public static int digitsCount(int num)
    {
        int count = 0;
        
        while(num > 0)
        {
            count++;
            num = num/10;
        }
        
        return count;
    }
    
    //----------------------------------------------------------------------
    
    public static void filterArray(boolean[] arr)
    {
        int length = arr.length;
        
        int i;
        int temp = 0;
        
        
        if( (length >= 10) && (length < 100) )
        {
            temp = 11;
            for(i=2 ; i<=10 && temp <= length ; i++)
            {
                arr[temp] = true;
                temp = i*11;
            }
        }
        
        if( (length >= 100) && (length < 1000) )
        {
            temp = 111;
            for(i=2 ; i<=10 && temp <= length ; i++)
            {
                arr[temp] = true;
                temp = i*111;
            }
        }
        
        if( (length >= 1000) && (length < 10000) )
        {
            temp = 1111;
            for(i=2 ; i<=10 && temp <= length ; i++)
            {
                arr[temp] = true;
                temp = i*1111;
            }
        }
        
        if( (length >= 10000) && (length < 100000) )
        {
            temp = 11111;
            for(i=2 ; i<=10 && temp <= length; i++)
            {
                arr[temp] = true;
                temp = i*11111;
            }
        }
        
        if( (length >= 100000) && (length < 1000000) )
        {
            temp = 111111;
            for(i=2 ; i<=10 && temp <= length ; i++)
            {
                arr[temp] = true;
                temp = i*111111;
            }
        }
        
        if( (length >= 1000000) && (length <= 2000000) )
            arr[1111111] = true;
    }
}
