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();
	}
}

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.HashMap;

public class RecycledNumber {

	public static void main(String[] args) {

		try {

			FileInputStream fstream = new FileInputStream(args[0]);

			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine;

			int count = 0;
			int noCases = 0;
			while ((strLine = br.readLine()) != null) {
				if (count > noCases)
					break;

				if (count == 0) {
					noCases = Integer.valueOf(strLine);
				} else {
					compute(count, strLine);
				}

				count++;
			}

			in.close();
		} catch (Exception e) {
			System.err.println("Error: " + e.getMessage());
		}
	}

	private static void compute(int caseNo, String str) {
		String[] AB = str.split(" ");
		int A = Integer.valueOf(AB[0]);
		int B = Integer.valueOf(AB[1]);

		int meetsCriteria = 0;

		HashMap<Integer, Integer> hm = new HashMap<Integer, Integer>();
		while (A < B) {
			hm = new HashMap<Integer, Integer>();
			int n = A;

			String nStr = String.valueOf(n);
			int nLen = nStr.length();

			for (int j = 0; j < nLen - 1; j++) {

				nStr = nStr.charAt(nLen - 1) + nStr.substring(0, nLen - 1);
				int m = Integer.valueOf(nStr);

				if (Integer.valueOf(AB[0]) <= n && n < m && m <= B) {

					if (!hm.containsKey(m)) {
						hm.put(m, m);
						meetsCriteria++;
					}

				}
			}

			A++;
		}

		System.out
				.println(String.format("Case #%s: %s", caseNo, meetsCriteria));

	}
}
