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.File;
import java.util.HashMap;
import java.util.StringTokenizer;
import java.io.FileReader;
public class C {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception  {
		BufferedReader reader = null;
		String fileName = "C-large.in";
		String outputFileName=fileName.replace(".in", ".out");
		reader=new BufferedReader(new FileReader(fileName));
		File outFile=new File(outputFileName);
		outFile.createNewFile();
		int T = Integer.parseInt(reader.readLine());
		for (int i = 1; i <=T; i++) {
			StringTokenizer t=new StringTokenizer(reader.readLine()," ");
			int start=Integer.parseInt(t.nextToken());
			int end=Integer.parseInt(t.nextToken());
			int count=0;
			HashMap<String,String> map=new HashMap<String,String>();
			for(int j=start;j<end;j++){
				String s=j+"";
				for(int k=1;k<s.length();k++){
					String ss=s.substring(s.length()-k);
					String es=s.substring(0,s.length()-k);
					if(ss.startsWith("0"))continue;
					int num=Integer.parseInt(ss+""+es);
					if(num<=end && num>=start && num>j){
						String key=j+"_"+num;
						if(map.get(key)==null){
							map.put(key, key);
							count++;
						}
					}
				}
			}
			System.out.println("Case #"+i+": "+count);
		
		}

	}

}
