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();
	}

}

package qualification;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.StringTokenizer;

public class C {

	/**
	 * @param args
	 */
	static int number (int num){
		int i=0;
		while (num!=0){
			num/=10;
			i++;
		}
		return i-1;
	}
	public static void main(String[] args) throws IOException {
		BufferedReader f = new BufferedReader(new FileReader("C-large.in"));
		PrintWriter out = new PrintWriter((new FileWriter("C-large.out")));
		StringTokenizer st ;
		int tekrar = Integer.parseInt(f.readLine());
		
		for (int j=0;j<tekrar;j++){
			st = new StringTokenizer(f.readLine());
			int min = Integer.parseInt(st.nextToken());
			int max =  Integer.parseInt(st.nextToken());
			int count =0;
			for (int i=min;i<=max;i++){
				int num = i;
				num = (int) ((num%10)*Math.pow(10, number(num)))+num/10;
				while (num != i){
					while (number(i) != number(num)){
						num = (int) ((num%10)*Math.pow(10, number(i)))+num/10;
						if (num == i)
							break;
					}
					if (num == i)
						break;
					
					if (num>=min && num<=max ){
						count ++;
					}
					num = (int) ((num%10)*Math.pow(10, number(num)))+num/10;
				}
			}
			out.println("Case #"+(j+1)+": "+count/2);
		
		}
		out.close();
		System.exit(0);

	}

}
