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.File;
import java.io.FileNotFoundException;
import java.util.Scanner;


public class RecycledNumbers {

	/**
	 * @param args
	 */
	public static void main(String[] args) {

		int NumOfRecPairFound = 0;
		
		
		
        File file = new File("data/C-small-attempt0.in");
        
        
        try {
            
        	Scanner scanner = new Scanner(file);
            
        	int numOfLines = scanner.nextInt();

        	scanner.nextLine();


        	
        	for (int i = 0; i < numOfLines; i++) {
        	
        		// Start from B down to A
        		// Ass is n is strictly less then m
        		int A = scanner.nextInt();
        		int B = scanner.nextInt();
        		
        		NumOfRecPairFound = 0;

        		// Special case
        		if (A < 10 || B < 10) {
        			System.out.println("Case #" + (i+1) + ": 0");
        			continue;
        		}
        		
        		int rotNumbers[];
        		
        		for (int m = B; m >= A; m--) {
        		
        			// Get all the rotated numbers first, then compare
        			rotNumbers = rotatedNumbers(m);
        			
        			for (int test : rotNumbers) {
        				if (test >= A && test < m) {
        					NumOfRecPairFound++;
        				}
        			}
        		}
        		
        			        		
        		System.out.println("Case #" + (i+1) + ": " + NumOfRecPairFound);
        		
        	}
        	
        	
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

		
		
	}
	
	public static int[] rotatedNumbers(int number) {
		
		int orgNumber = number;
		
		// If we have a 4 digit number, there are 3 rotations (excluding itself)
		int NumOfRotations = (int)Math.log10(orgNumber);
		int output[] = new int[NumOfRotations];
        int mul = (int) Math.pow(10.0, (double)NumOfRotations);
        

       int i = 0;
        while(true)
        {
              int q = number / 10;
              int r = number % 10;

              number = number / 10;
              number = number + mul * r;

             
              if(number == orgNumber)
                    break;

              output[i++] = number;
        }
        
		
		return output;
	}

}
