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.util.*;
import java.io.*;
import static java.lang.Math.*;

public class A {

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		BufferedReader in = new BufferedReader(new FileReader("C-small-attempt0.in"));
  		FileWriter fw = new FileWriter("output.out");
  		/*BufferedReader in = new BufferedReader(new FileReader("A-large.in"));
  		FileWriter fw = new FileWriter("A-large.out");*/
  		int N = new Integer(in.readLine());
  		String[] output = new String[N];
  		int[] trueCount = new int[N];
  		for (int cases = 0; cases < N; cases++) {
  			int CaseNo = cases+1;
  			output[cases] = "";
  			StringTokenizer G = new StringTokenizer(in.readLine());
  			int W = G.countTokens();
  			int[] a = new int[2];
  			String[] b = new String[W];
  			for (int j = 0; j < a.length; j++) {
  				a[j] = new Integer(G.nextToken());
  			}
  			int counter = 1;
  			int A =a[0];
  			int B =a[1];
  			int C = a[0];
  			System.out.println(A + "  x  " +B);
  			
  			int lengthA = Integer.toString(A).length();
  			if (lengthA == 1){
  				trueCount[cases] = 0;
  			}
  			else{
	  			int range = B - A + 1;
	  			int[] rangeA = new int[range];
	  			rangeA[0] = A;
	  			while (A<B){
	  				A = A+1;
	  				rangeA[counter] = A;
	  				counter=counter+1;
	  			}
	  			for (int ii=0;ii<range;ii++){
	  				int currentN = rangeA[ii];
	  				int currentM = rangeA[ii];
	  				int length = Integer.toString(rangeA[ii]).length();
	  				String curM = Integer.toString(currentM);
	  				for (int jj=0; jj<length;jj++){  					
	  					curM = curM.charAt(length-1) + curM.substring(0, length-1);
	  					currentM = Integer.parseInt(curM);	  					
	  					if (currentM <= B && currentM > currentN && currentM >= C){
	  						trueCount[cases]+=1;
	  					}
	  				}
	  				
	  			}  	
  			}
  			fw.write("Case #"+CaseNo+": "+ trueCount[cases]+ "\n");  			
  			
  		}
  		fw.flush();
  		fw.close();
	}
}
