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.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;


public class C {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("C-small-attempt0.in"));
		String li;
		int tcn = Integer.parseInt(in.readLine());
		Scanner sc;
		String A, B, is, tmp;
		List<Pair> ar = new ArrayList<Pair>();
		for (int tc = 0; tc < tcn; tc++) {
			ar.clear();
			li = in.readLine();
			sc = new Scanner(li);
			A = sc.next(); B = sc.next();
			int a = Integer.parseInt(A), b = Integer.parseInt(B), tmpi;
			int result = 0;
			if (a > 9) {
				for (int i = a; i <= b; i++) {
					is = String.valueOf(i);
					if (!isSame(is)) {
						for (int j = 1, l = is.length(); j < l; j++) {
							tmp = is.substring(j) + is.substring(0, j);
							tmpi = Integer.valueOf(tmp);
							if (i != tmpi) {
								Pair p = new Pair(i, tmpi);
								if (!ar.contains(p) && tmpi > a && tmpi < b) {
									ar.add(p);
									result++;
								}
							}
						}
					}
				}

			}
			System.out.println("Case #" + (tc + 1) + ": " + result);
		}
		in.close();
	}

	static boolean isSame(String s) {
		char[] ds = s.toCharArray();
		char fd = ds[0];
		for (char d : ds) {
			if (d != fd) return false;
		}

		return true;
	}

	static class Pair {
		final int f;
		final int s;

		Pair(int f, int s) {
			this.f = f;
			this.s = s;
		}

		public boolean equals(Object o) {
			Pair that = (Pair) o;

			return ((this.f == that.f && this.s == that.s) || (this.f == that.s && this.s == that.f));
		}

		public String toString() {
			return "(" + f + "," + s + ")";
		}
	}
}
