package fixjava;

public class StringUtils {

	/** Repeat the given string the requested number of times. */
	public static String repeat(String str, int numTimes) {
		StringBuilder buf = new StringBuilder(Math.max(0, str.length() * numTimes));
		for (int i = 0; i < numTimes; i++)
			buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the left hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padLeft(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(padChar);
		for (int i = 1, mi = bufSize - str.length(); i < mi; i++)
			buf.append(padChar);
		buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the right hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padRight(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(str);
		buf.append(padChar);
		while (buf.length() < bufSize)
			buf.append(padChar);
		return buf.toString();
	}

	/** Intern all strings in an array, skipping null elements. */
	public static String[] intern(String[] arr) {
		for (int i = 0; i < arr.length; i++)
			arr[i] = arr[i].intern();
		return arr;
	}

	/** Intern a string, ignoring null */
	public static String intern(String str) {
		return str == null ? null : str.intern();
	}

}


import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.*;

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

public class C {

	int INF = 1 << 28;

	void run() {
		Scanner sc;
		FileOutputStream fw;
		try {
			sc = new Scanner(new File("C.in"));
			fw = new FileOutputStream(new File("C.out"));
			PrintWriter pw = new PrintWriter(fw);
//			sc.useDelimiter("\\n");
			int n = sc.nextInt();
			for(int i=1;i<=n;i++) {
				int a = sc.nextInt();
				int b = sc.nextInt();
				int cnt = 0;
				for(int j=a;j<=b;j++) {
					String num = String.valueOf(j);
//					debug(num);
					HashSet<Integer> visited = new HashSet<Integer>();
					for(int k=1;k<num.length();k++) {
						String rot_s = num.substring(k) + num.substring(0,k);
						int rot = Integer.parseInt( rot_s );
						if(rot > j && a <= rot &&  rot <= b) visited.add(rot);
					}
					cnt += visited.size();
				}
//				debug(cnt);
				pw.println("Case #" + i + ": " + cnt);
			}
			pw.close();
			fw.close();
		} catch (FileNotFoundException e) {
			// TODO èªåçæããã catch ãã­ãã¯
			e.printStackTrace();
		} catch (IOException e) {
			// TODO èªåçæããã catch ãã­ãã¯
			e.printStackTrace();
		}
	}

	public static void main(String[] args) {
		new C().run();
	}

	void debug(Object... os) {
		System.err.println(Arrays.deepToString(os));
	}
}
