/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recyclednumbers;

import java.util.HashSet;

/**
 *
 * @author vandit
 */
public class RecycleNumbers {

    private HashSet<String> numbers = new HashSet<String>();
    private HashSet<String> initialTempNumbers = new HashSet<String>();
    private HashSet<String> finalTempNumbers = new HashSet<String>();

    HashSet<Pair> numberPairs = new HashSet<Pair>();


    private void findRecycledNumbers(int start, int end, int places) {


        for (int i = start; i <= end; i++) {
            String initialNumber = Integer.toString(i);
            //if (!(numbers.contains(initialNumber) || finalTempNumbers.contains(initialNumber))) {

                StringBuffer tempNumber = new StringBuffer(initialNumber);
                int len = tempNumber.length();
                int startIndexToMove = len - places;
                String tempString = tempNumber.substring(startIndexToMove);
                if ((places == 1 && tempString.equals("0")) || tempString.charAt(0) == '0') {
                    continue;
                }
                tempNumber.delete(startIndexToMove, len);
                String finalTempNumber = tempString + tempNumber.toString();

                if (! (finalTempNumber.equals(initialNumber) || Integer.parseInt(finalTempNumber) > end || Integer.parseInt(finalTempNumber) < Integer.parseInt(initialNumber))) {
                    numbers.add(initialNumber);
                    finalTempNumbers.add(finalTempNumber);
                    Pair pair = new Pair(finalTempNumber,initialNumber);
                    numberPairs.add(pair);
                }
            }

        

    }

    public HashSet<Pair> findAllRecycledNumbers(int start, int end) {
        int length = Integer.toString(start).length();
        for (int i = 1; i < length; i++) {
            findRecycledNumbers(start, end, i);
        }
        return numberPairs;
    }
}

import java.io.FileReader;
import java.io.BufferedReader;
import java.io.FileWriter;
import java.io.BufferedWriter;
	
public class RecycledNumbers {
	

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try{
			//read file
			FileReader filein = new FileReader(args[0]);
			BufferedReader in = new BufferedReader(filein);
			//write file 
			FileWriter fileout = new FileWriter("output.txt");
			BufferedWriter out = new BufferedWriter(fileout);
			//process data
			int numcases = Integer.valueOf(in.readLine()).intValue();
			for(int i=0; i<numcases; i++){
				String[] casedata = in.readLine().split(" ");
				int minnum = Integer.valueOf(casedata[0]);
				int maxnum = Integer.valueOf(casedata[1]);
				int pos = casedata[0].length();
				int result = 0;
				for(int j=minnum; j<maxnum; j++){
					for(int k=j+1; k<=maxnum; k++){	
						if(j == k) result++;
						String numtest = String.valueOf(j);
						for(int l=0; l<pos; l++){
							char temp = numtest.charAt(0);
							numtest = numtest.substring(1)+temp;
							if(Integer.valueOf(numtest).intValue() == k){
								result++;
								break;
							}
						}
					}
				}
				out.write("Case #" + (i+1) + ": " + result + "\n");
			}
			//Close the output stream
			out.close();
			//Close the input stream
			in.close();
		}catch (Exception e){//Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}
}
