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.ArrayList;
import java.util.List;
import java.util.Scanner;
public class c {
	public static void main(String[] args){

		Scanner in = new Scanner(System.in);
		int numOfLines = new Integer(in.nextLine());
		for (int i= 1; i<=numOfLines; i++)
		{
			int res =0;
			String [] lineValues = in.nextLine().split(" ");
			int n = new Integer(lineValues[0]);
			int m = new Integer(lineValues[1]);
			
			for (Integer j = n; j<m; j++)
			{
				String nS=j.toString();
				if (nS.length()<2) continue;
				List<Integer> parellesBones = new ArrayList<Integer>();
				for (int k = nS.length();k>=1;k--)
				{
					String endPart=nS.substring(k);
					String beginPart=nS.substring(0,k);
					Integer recycled = new Integer(endPart+beginPart);
					
					if (recycled >m) continue;
					if (recycled <j) continue;
					if (recycled == j)continue;
					if (parellesBones.indexOf(recycled)!=-1 )continue;
					if (recycled >j) 
					{
						parellesBones.add(recycled);
						res++;
					}
				}
								
			}
			
			System.out.format("Case #%d: %d\n", i, res);
		}
		return;
	}
}