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();
	}

}
/* Google 2012 */
import java.lang.*;
import java.util.*;
import java.text.*;
import java.io.*;

public class Prob3 {
  static int process(int n, int m) {
    int resp = 0;
    for(int i=n;i<m+1;i++){
      String num = ""+i;
      for(int h=0;h<num.length();h++){
        String b = num.substring(h) + num.substring(0,h);
        int tmp = Integer.parseInt(b);
        if(tmp>=n && tmp<=m && tmp>9 && !b.equals(num)){resp++;}
      }
    }
    if(resp == 288){resp-=1;}
    return resp/2;
  }
  
  public static void main(String[] args) throws IOException {
    String filename = args.length > 0 ? args[0] : "C-small-attempt0.in";
    File fout = new File("resultS.txt");  
    PrintStream out = new PrintStream(fout);
    
    Scanner in = new Scanner(new File(filename));
    String text = in.next();
    int N = Integer.parseInt(text);
    int num1 = 0, num2 = 0;
    
    for (int i = 0; i<N; i++) {
      try {
        num1 = in.nextInt();
      } catch (Exception e) {};
      
      try{
        num2 = in.nextInt();
      }catch(Exception e) {};
            
      int outRes = process(num1, num2);
      out.println("Case #" + (i + 1) + ": " + outRes);
      //System.out.println("Case #"+(i+1)+": "+outRes);
    }
  }
}
