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.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Iterator;

public class GCIFileWriter {
	
	public GCIFileWriter (File file) throws IOException {
		mBufferedWriter = new BufferedWriter(new FileWriter(file));
		mFile = file;
	}
	
	public void writeResult(GCIResult res) throws IOException
	{
		Iterator<String> it = res.iterator();
		while(it.hasNext())
		{
			mBufferedWriter.write(it.next() + "\n");
			mBufferedWriter.flush();
		}
	}
	
	public void reset() throws IOException
	{
		mBufferedWriter.close();
		mBufferedWriter = new BufferedWriter(new FileWriter(mFile));
	}
	
	public void close() throws IOException
	{
		mBufferedWriter.flush();
		mBufferedWriter.close();
	}

	private BufferedWriter mBufferedWriter;
	private File           mFile;

}
