import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.StringTokenizer;


public class JamInputReader {
	int		numItem;
	String	thisLine = null;
	BufferedReader	in;
	StringTokenizer	tokenizer;
	
	public JamInputReader(String fileName) {
		try {
			in = new BufferedReader(new FileReader(fileName));
/*			String text = in.readLine();
			numItem = Integer.parseInt(text);*/
			
			readNextLine();
			tokenizer = new StringTokenizer(thisLine, " ");
			
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} 
	}
	
	void readNextLine() {
		try {
			thisLine = in.readLine();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	int getNumItems() {
		numItem = Integer.parseInt(tokenizer.nextToken());
		return numItem;
	}
	
	String getNextItem() {
		if(false == tokenizer.hasMoreTokens()) {
			readNextLine();
			tokenizer = new StringTokenizer(thisLine, " ");
		}
		return tokenizer.nextToken();
	}

	String getNextLine() {
		readNextLine();
		return thisLine;
	}
	
	int getNextInt() {
		return Integer.parseInt(getNextItem());
	}
	
	long getNextLong() {
		return Long.parseLong(getNextItem());
	}
	
	byte[] getNextLineByte() {
		readNextLine();
		return thisLine.getBytes(); 
	}
}
