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 org.codejam.rn;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.HashMap;
import java.util.Map;


/**
 * 
 * @author juanjo
 */
public class RecycledNumbersMain {
  
  public static String newline = System.getProperty("line.separator");
  
  
  private static void generateNumbers(Map<String, String> pairs, int A, int B, int n) {
    int m;
    String s = String.valueOf(n);
    String pair = null;
    int length = s.length() - 1;
    int[] data = new int[length];
    
    for (int i = 0; i < length; i++) {
      //s = s.charAt(length) + s.substring(0, length);   
      s = new StringBuilder().append(s.charAt(length)).append(s.substring(0, length)).toString();
      data[i] = Integer.parseInt(s);
      m = Integer.parseInt(s);
      
      if ((A <= n) && (n < m) && (m<=B)) {
        pair = new StringBuilder().append(n).append("-").append(m).toString();
        if (!pairs.containsKey(pair));
          pairs.put(pair, pair);
      }
    }   
  }
  
  private static int getRecyledPairsCount(int A, int B) {
    Map<String, String> pairs = new HashMap<String, String>();    
    for (int n = A; n <= B; n++) {
      generateNumbers(pairs, A, B, n);
    }
    return pairs.size();
  }

	/**
	 * @param args
	 */
	public static void main2(String[] args) {
	  long time = System.currentTimeMillis();
	  System.out.println("getRecyledPairsCount: " + getRecyledPairsCount(100,500));
	  System.out.println("Execution time ms.: " + (System.currentTimeMillis() - time) );
	}
	
	public static void main(String[] args) {
	  long time = System.currentTimeMillis();
    if (args.length != 2) {
      System.out.println("Usage: java " + RecycledNumbersMain.class  + " inputFile outputFile");
      System.exit(0);
    }

    int count = 0;
    BufferedReader in = null;
    FileWriter out = null;
    String line = null;
    int testCasesTotal = 0;
    int testCasesCount = 0;
    String result;
    
    int A, B;
    String s[];

    try {
      in = new BufferedReader(new FileReader(args[0]));
      out = new FileWriter(args[1]);
      
      while ( (line = in.readLine()) != null) {
        count++;
        if (count == 1) {
          testCasesTotal = Integer.valueOf(line);
          System.out.println("In file number of test cases: " + testCasesTotal + ".");
        } //if
        else {
          s = line.split(" ");
          A = Integer.parseInt(s[0]);
          B = Integer.parseInt(s[1]);    
          
          result = String.valueOf(getRecyledPairsCount(A, B));
          testCasesCount++;
          result = "Case #" + testCasesCount + ": " + result;
          System.out.println(result + " -- Line: " + testCasesCount + ": " + line);
          out.write(result + newline);
        }
      }
      if (out != null) {
        out.close();
      }
    } //try
    catch (Exception e) {
      e.printStackTrace();
    }
    finally {
      System.out.println("Execution time ms.: " + (System.currentTimeMillis() - time) );
    }
  } // Main

}
