package codejam;

import java.util.*;
import java.io.*;

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("in.txt"));
		PrintWriter out = new PrintWriter(new File("out.txt"));
		
		int T = Integer.parseInt(in.readLine());
		for (int t = 1; t <= T; ++t) {
			String[] parts = in.readLine().split("[ ]+");
			int A = Integer.parseInt(parts[0]);
			int B = Integer.parseInt(parts[1]);
			
			int cnt = 0;
			for (int i = A; i < B; ++i) {
				String str = String.valueOf(i);
				int n = str.length();
				String res = "";
				Set<Integer> seen = new HashSet<Integer>();
				for (int j = n - 1; j > 0; --j) {
					res = str.substring(j) + str.substring(0, j);
					int k = Integer.parseInt(res);
					if (k > i && k <= B) {
						//System.out.println("(" + i + ", " + k + ")");
						if (!seen.contains(k)) {
							++cnt;
							seen.add(k);
						}
					}
				}
			}

			out.println("Case #" + t + ": " + cnt);
		}
		
		in.close();
		out.close();
		System.exit(0);
	}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;



/**
 * @author alex
 *
 */
public class ProblemCRecycledNumbers {
	public static void main(String args[]) {
		try{
			String fileDir = "/Users/alex/Documents/workspace/codejam2012/src/";
			String inputFile = "C-small-attempt3";
		//	String inputFile = "CSmallInput0";
			FileInputStream fstream = new FileInputStream(fileDir+inputFile+".in");
			// Get the object of DataInputStream
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String firstLine = br.readLine();
			int numberOfTests = Integer.parseInt(firstLine);

			String strLine;
			Integer numberOfRecurrences;
			// open write file descriptor
			 FileWriter ofstream = new FileWriter(fileDir+inputFile+"-output.txt");
			  BufferedWriter out = new BufferedWriter(ofstream);
			
			//Read File Line By Line
			for(int loop=0;loop<numberOfTests;loop++) {//while ((strLine = br.readLine()) != null)   {
				strLine = br.readLine();
				
				// translate line
				numberOfRecurrences = calculateRecycled(strLine);
				
				// Print the content on the console
				System.out.println ("Case #" + (loop+1) + ": " + numberOfRecurrences);
				out.write("Case #" + (loop+1) + ": " + numberOfRecurrences + "\n");
			}
			//Close the input stream
			in.close();
			out.close();
		}catch (Exception e){//Catch exception if any
			System.err.println("Error: " + e + e.getMessage());
		}
	}

	/**
	 * @param strLine
	 * @return
	 */
	private static Integer calculateRecycled(String strLine) {
		Integer result = 0;
		String[] nm = strLine.split(" ");
		Integer alpha = Integer.parseInt(nm[0]);
		Integer beta = Integer.parseInt(nm[1]);
		//System.out.println("niou and miou:" + niou + ":" + miou);
		if(alpha<10) return 0;
		
		for(Integer niou=alpha;niou<beta;niou++) {
			char[] nioudigits = (niou.toString()).toCharArray();
			if(nioudigits.length==2) {
				char[] revnioudigits = {nioudigits[1], nioudigits[0]};
				String miou1 = new String(revnioudigits);
				if( (alpha < Integer.parseInt( miou1 )) && (Integer.parseInt( miou1 ) <= beta) && (niou< Integer.parseInt( miou1 ))) {
//					System.out.println(">matched for:" + Integer.parseInt( revnioudigitsString ));
					result++;
				}
			} else if(nioudigits.length==3) {
				char[] revnioudigits1 = {nioudigits[2], nioudigits[0], nioudigits[1]};
				String miou11 = new String(revnioudigits1);
				char[] revnioudigits2 = {nioudigits[1], nioudigits[2], nioudigits[0]};
				String miou12 = new String(revnioudigits2);
				if( ((alpha < Integer.parseInt( miou11 )) && (Integer.parseInt( miou11 ) <= beta) && (niou < Integer.parseInt( miou11 ) && ( Integer.parseInt( miou11 ) != Integer.parseInt( miou12 ) ) )
					)
				) {
//					System.out.println(">>matched for:" + Integer.parseInt( revnioudigitsString1 ));
					result++;
				}
				if( (  (alpha < Integer.parseInt( miou12 )) && (Integer.parseInt( miou12 ) <= beta) && (niou < Integer.parseInt( miou12 ) && ( Integer.parseInt( miou11 ) != Integer.parseInt( miou12 ) )) 
						)
					) {
//						System.out.println(">>matched for2:" + Integer.parseInt( revnioudigitsString1 ));
						result++;
					}
			
				
			}
		}
		
		
		return result;
	}
}
