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.BufferedReader;
import java.io.FileReader;
import java.util.Arrays;
import java.util.TreeSet;

public class Main {

	public static void main(String[] args) throws Throwable {
		long init = System.currentTimeMillis();
		int MAX = 2000001;
		//int MAX = 201;
		int arr[][] = new int[MAX][];
		{
			for (int i = 1; i < MAX; i++) {
				TreeSet<Integer> set = new TreeSet<Integer>();
				set.add(i);
				String num = Integer.toString(i);
				for (int j = 1; j < num.length(); j++) {
					String newNum = num.substring(j) + num.substring(0, j);
					if (newNum.charAt(0) != '0') {
						int n = Integer.parseInt(newNum);
						if (n > i && !set.contains(n)) {
							set.add(n);
						}
					}
				}
				set.remove(i);
				arr[i] = new int[set.size()];
				{
					int j = 0;
					for (Integer n : set) arr[i][j++] = n;
				}
			}
		}
		
		long end = System.currentTimeMillis();
		BufferedReader in = new BufferedReader(new FileReader("C-small-attempt0.in"));
		
		for (int i = 0, n = Integer.parseInt(in.readLine().trim()); i < n; i++) {
			String s[] = in.readLine().trim().split(" +");
			int a = Integer.parseInt(s[0]), b = Integer.parseInt(s[1]);
			int c = 0;
			for (int j=a; j<=b; j++) {
				for (int k=0, d; k<arr[j].length && (d=arr[j][k]) <= b; k++) c++;
			}
			System.out.println("Case #"+(i+1)+": "+c);
		}
		//System.out.printf("%.2f seconds%n", (end - init) / 1000.);
	}
}
