import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class CopyOfCopyOfMain {

	static int ndigits(int n) {
		return (int) (Math.log10(n) + 1);
	}

	static int rot(int n, int dig) {
		return (int) ((n % 10) * Math.pow(10, dig - 1)) + (int) (n / 10);
	}

	public static void main(String[] args) throws FileNotFoundException {
		String file = "C-large";
		Scanner in = new Scanner(new File(file + ".in"));
		PrintWriter out = new PrintWriter(new File(file + ".out"));

		int T = in.nextInt();
		for (int t = 1; t <= T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();

			int c = 0;
			int[] list = new int[ndigits(B)];
			numbers: for (int i = A; i <= B; i++) {
				int digs = ndigits(i);
				int rot = i;
				int pairs = 0;

				Arrays.fill(list, -1);
				list[0] = i;

				digits: for (int j = 1; j <= digs + 1; j++) {

					rot = rot(rot, digs);
					if(rot < i)
						continue;

					if (A <= rot && rot <= B) {
						for (int k = 0; k < j; k++) {
							if (list[k] == rot) {
								continue digits;
							}
						}
						pairs++;
						list[j] = rot;
					}
				}

				//c += pairs * (pairs + 1) / 2;
				c += pairs ;
				// c+=digs;
			}
			out.println("Case #" + t + ": " + c);
		}

		in.close();
		out.close();
	}
}

package recyclednumbers;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;


public class SimpleWriter {
	private BufferedWriter bw;
	private int line;
	
	public SimpleWriter() {
		String filename = prompt();
		setWriter(filename);
	}
	
	public SimpleWriter(String filename) {
		setWriter(filename);
	}
	
	private String prompt() {
		System.out.println("Output file: ");
		BufferedReader bufr = new BufferedReader(
				new InputStreamReader(System.in));
		String filename = null;
		try {
			filename = bufr.readLine();
		} catch (IOException e) {
			System.err.println("At prompt: " + e.getMessage());
		}
		return filename;
	}
	
	private void setWriter(String filename) {
		try {
			bw = new BufferedWriter(new FileWriter(filename));
		} catch (IOException e) {
			System.err.println(e.getMessage());
		}
	}
	
	public void writeLine(String str) {
		try {
			line++;
			bw.write(str + "\n");
		} catch (IOException e) {
			System.err.println("Line " + (line - 1) + ": " + e.getMessage());
		}
	}
	
	public void writeLine(int i) {
		writeLine(i + "");
	}
	
	public void writeLine(int[] arr) {
		String line = "";
		for (int i : arr) {
			line = line + i + " ";
		}
		line = line.trim();
		writeLine(line);
	}
	
	public void flush() {
		try {
			bw.flush();
		} catch (IOException e) {
			System.err.println("At flush: " + e.getMessage());
		}
	}
}
