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();
	}
}

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.StringTokenizer;


public class ProblemC {
	private String line = "";
	private String fileContents = "";
	private String delim = "\r\n";
	private String fileName = "C-small-attempt0.in";
	
	public void solve() {
		StringTokenizer st = new StringTokenizer(fileContents,delim);
		StringTokenizer lineToken = null;
		int count = 1;
		int testCases = 0;
		int lower = 0;
		int	upper = 0;
		int y = 0;
		
		ArrayList<Integer> numbersList = new ArrayList<Integer>();
		
		testCases = Integer.parseInt(st.nextToken());
		
		while(st.hasMoreTokens()) {
			
			line = st.nextToken();
			
			System.out.print("Case #");
			System.out.print(count++);
			System.out.print(": ");
			
			lineToken = new StringTokenizer(line," ");
			
			lower = Integer.parseInt(lineToken.nextToken());
			upper = Integer.parseInt(lineToken.nextToken());

			y = 0;
			int numberLen = 0;
			for(int i=lower; i<upper; i++) {
				String number = String.valueOf(i);
				numberLen = number.length();
				for(int k = 1; k<numberLen; k++) {
					String newNumberBack = number.substring(0, numberLen-k);
					String newNumber = number.substring(numberLen-k);
					newNumber = newNumber + newNumberBack;
					if(!newNumber.startsWith("0") && newNumber.length() == number.length()) {
						Integer testNumber = Integer.parseInt(newNumber);
						if(lower <= i && i < testNumber && testNumber <= upper
//								&& !numbersList.contains(testNumber)
								) {
							numbersList.add(testNumber);
							y++;
							
/*							System.out.print("(");
							System.out.print(i);
							System.out.print(",");
							System.out.print(testNumber);
							System.out.print(")\t");
*/						}
					}
				}
			}
			System.out.println(y);
		}
	}
	
	public void readFile() {
		try {
			// Open the file that is the first
			// command line parameter
			FileInputStream fstream = new FileInputStream(fileName);
			// Get the object of DataInputStream
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine;
			StringBuilder sb = new StringBuilder();
			// Read File Line By Line
			while ((strLine = br.readLine()) != null) {
				// Print the content on the console
				sb.append(strLine);
				sb.append(delim);
			}
			// Close the input stream
			in.close();
			
			fileContents = sb.toString();
		} catch (Exception e) {// Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}

}
