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.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;


public class main2 {

	/**
	 * @param args
	 * @throws IOException 
	 * @throws NumberFormatException 
	 */
	public static void main(String[] args) throws NumberFormatException, IOException {
		// TODO Auto-generated method stub
		BufferedReader m = new BufferedReader(new InputStreamReader(System.in));
		PrintWriter ou = new PrintWriter("file.txt");
		int n = Integer.parseInt(m.readLine());
	
		for (int i = 0; i < n; i++) {
			String cas = m.readLine();
			String [] a = cas.split(" ");
			int base = Integer.parseInt(a[0]);
			int count = 0;
			int count1=0;
			if(a[0].length()==1){
				System.out.print("Case #"+(i+1)+": "+count);

				System.out.print("\n");
			}else{
				Boolean con = false;;
				int cass = Integer.parseInt(a[0]);
				do {
//					 con = false;;
//				String newcase = a[0].charAt(0)+"";
//				for(int j=0  ;j<a[0].length()-1;j++ ){
//					newcase +=a[0].charAt(0)+"";;
//				}
		
				do{
					
					count1 = count;
					
					String newcase = cass+"";
					if (cass <Integer.parseInt(a[1])){
						con = true;
						for (int j = 0; j < newcase.length()-1; j++) {
							newcase = (newcase+newcase.charAt(0));
							newcase = newcase.substring(1,newcase.length());
							int cassM = Integer.parseInt(newcase);
							if (base <= cass && cass < cassM && cassM<=Integer.parseInt(a[1]))
								count++;
						}
					}
					cass++;
				}while(count1 <count);
				
//					String tmp = cass+"";
//					int first = Integer.parseInt(tmp.charAt(0)+"");
//					first++;
//					tmp = first+""+tmp.substring(1,tmp.length());
//					a[0]=tmp;
				
				}while(cass <= Integer.parseInt(a[1]));
				System.out.print("Case #"+(i+1)+": "+count);

				System.out.print("\n");
			}
		}
	}

}
