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.util.HashSet;
import java.util.Hashtable;
import java.util.Scanner;
import java.util.Set;


public class CodeJamC {
	
	
	public static void main(String args[]){
		Scanner scn = new Scanner(System.in);
		int t = scn.nextInt();
		int a;
		int b;
		int m;
		int n;
		String stra;
		String str;
		for(int i = 1; i <= t; i++){
			a = scn.nextInt();
			b = scn.nextInt();
			Set<String> set = new HashSet<String>();
			
			for(int j = a; j <= b; j++){
				
				stra = j+"";
				str = stra;
				for(int k = 1; k < stra.length();k++){
					str = str.charAt(str.length()-1) + str.substring(0,str.length()-1);
					n = Integer.parseInt(str);
					
					if(n <= a)
						continue;
					if(n<=j)
						continue;
					if(n>b)
						continue;
					
					if(j<n){
						set.add(j+""+n+"");
					}else{
						set.add(n+""+j+"");
					}
				}
			}
			
			System.out.println("Case #"+i+": "+set.size());
		}
	}
}
