import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class CopyOfCopyOfMain {

	static int ndigits(int n) {
		return (int) (Math.log10(n) + 1);
	}

	static int rot(int n, int dig) {
		return (int) ((n % 10) * Math.pow(10, dig - 1)) + (int) (n / 10);
	}

	public static void main(String[] args) throws FileNotFoundException {
		String file = "C-large";
		Scanner in = new Scanner(new File(file + ".in"));
		PrintWriter out = new PrintWriter(new File(file + ".out"));

		int T = in.nextInt();
		for (int t = 1; t <= T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();

			int c = 0;
			int[] list = new int[ndigits(B)];
			numbers: for (int i = A; i <= B; i++) {
				int digs = ndigits(i);
				int rot = i;
				int pairs = 0;

				Arrays.fill(list, -1);
				list[0] = i;

				digits: for (int j = 1; j <= digs + 1; j++) {

					rot = rot(rot, digs);
					if(rot < i)
						continue;

					if (A <= rot && rot <= B) {
						for (int k = 0; k < j; k++) {
							if (list[k] == rot) {
								continue digits;
							}
						}
						pairs++;
						list[j] = rot;
					}
				}

				//c += pairs * (pairs + 1) / 2;
				c += pairs ;
				// c+=digs;
			}
			out.println("Case #" + t + ": " + c);
		}

		in.close();
		out.close();
	}
}

package com.gnooo;

import java.util.HashMap;
import java.util.Scanner;

public class Solution {
	static final boolean DBG = false;

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();

		long dStart = System.currentTimeMillis();

		StringBuilder sb = new StringBuilder();
		for (int i = 1; i <= T; i++) {
			OneTask task = new OneTask(sc.nextInt(), sc.nextInt());
			long res = task.getSolution();
			sb.append("Case #");
			sb.append(i);
			sb.append(": ");
			sb.append(res);
			sb.append('\n');
		}

		if (DBG) {
			sb.append("time :");
			sb.append(System.currentTimeMillis() - dStart);
		}
		System.out.print(sb.toString());

	}

	static class OneTask {
		long a, b;

		public OneTask(long a, long b) {
			this.a = a;
			this.b = b;
		}

		long getSolution() {
			long c = 0;

			for (long i = a; i < b; i++) {
				c += numberHasRecycledPairs(a, b, i);
			}
			return c;
		}

	}

	static long numberHasRecycledPairs(long min, long max, long no) {
		String str = String.valueOf(no);

		final int len = str.length();
		int res = 0;
		HashMap<Long, Integer> map = new HashMap<Long, Integer>();
		for (int i = 1; i < len; i++) {
			long tmp = Long.parseLong(str.substring(len - i)
					+ str.substring(0, len - i));
			if (min <= tmp && tmp <= max && tmp > no) {
				if (!map.containsKey(tmp)) {
					res++;
					map.put(tmp, 0);
				}
			}
		}

		return res;
	}
}
