
import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;
import java.io.File;
import java.io.IOException;
import java.io.FileWriter;
import java.io.BufferedWriter;

public class Recycle
{
	public static void main(String[] args)
	{
/*		Set<Integer> perms = getPermutations(123456);
		
		for(Integer i: perms)
			System.out.println(i);*/
	
		try
		{
			Scanner s = new Scanner(new File("recycle.in"));
			BufferedWriter w = new BufferedWriter(new FileWriter(new File("recycle.out")));
			int numCases = s.nextInt();
			s.nextLine();
			
			for(int n = 1;n <= numCases; n++)
			{
				int A = s.nextInt();
				int B = s.nextInt();
				int count = 0;
				for(int k = A; k <= B; k++)
				{
					count += getNumPairs(k, B);
				}
				
				w.write("Case #" + n + ": " + count + "\n");
			}
			
			w.flush();
			w.close();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}
	
	public static int getNumPairs(int n, int B)
	{
		Set<Integer> possibles = getPermutations(n);
		int count = 0;
		for(Integer i : possibles)
			if(i > n && i <= B)
				count++;
		return count;
	}
	
	public static Set<Integer> getPermutations(int n)
	{
		Set<Integer> perms = new TreeSet<Integer>();
		char[] digits = String.valueOf(n).toCharArray();
		
		for(int firstPos = 1; firstPos < digits.length; firstPos++)
		{
			String toBuild = "";
			for(int k = 0; k < digits.length; k++)
				toBuild += digits[(firstPos + k) % digits.length];
			perms.add(Integer.parseInt(toBuild));
		}
		return perms;
	}
	

}
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;


public class Recycled_Numbers_2 {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String strFileName = "C-small-attempt0";
		String strInputFileName = strFileName + ".in";
		String strOutputFileName = strFileName + ".out";

		int iCaseNumber=1;
		
		try {
			////////////////////////////////////////////////////////////////
			BufferedReader in = new BufferedReader(new FileReader(strInputFileName));
			BufferedWriter out = new BufferedWriter(new FileWriter(strOutputFileName));
			String inString = "";
			String outString = "";

			String sTotalNumber = in.readLine();
			
			while ((inString = in.readLine()) != null) {
				System.out.println(inString);
				// µÎ °³ÀÇ ¼ýÀÚ·Î ÀÌ·ç¾îÁ® ÀÖ´Ù.
				String[] saRange = inString.split(" ");
				int iStart = Integer.parseInt(saRange[0]);
				int iEnd = Integer.parseInt(saRange[1]);
				System.out.println(String.format("S:[%d], E:[%d]", iStart, iEnd));
				
				ArrayList<Integer> listCompare = new ArrayList<>();
				int iCount = 0;
				
				for (int iNumber = iStart; iNumber <= iEnd; iNumber++) {
					
					// ¼öÀÇ ÀÚ¸´¼ö ¾ò±â
					int iGetDigit = iNumber;
					int iDigitCount = 0;
					while (iGetDigit > 0) {							
						iGetDigit /= 10;
						iDigitCount++;
					}
					
					//System.out.println(String.format("%d's Digit is %d",iNumber, iDigitCount));
					
					boolean bFound = false;
					
					// ºñ±³
					for (int idx = 0; idx < listCompare.size(); idx++) {
						int iCompareNumber = listCompare.get(idx);
												
						for (int iDigit = 1; iDigit <= iDigitCount-1; iDigit++) {
							int iFront = (int) (iNumber/(Math.pow(10, iDigit)));
							int iBack = (int) (iNumber%(Math.pow(10, iDigit)));
							int iModify = (int) (iBack * (Math.pow(10, iDigitCount-iDigit)) + iFront);
							
//							System.out.println(String.format("Check: iNumber:[%d], iDigit:[%d], iFront:[%d], iBack:[%d], iModify:[%d]"
//																		, iNumber, iDigit, iFront, iBack, iModify));
							
							if (iCompareNumber == iModify) {
								//System.out.println(String.format("Compare:[%d], iNumber:[%d], iModify[%d], iDigit[%d]", iCompareNumber, iNumber, iModify, iDigit));
								iCount ++;
								//listCompare.remove(idx);
								bFound = true;
								//break;
							}
							
						}
						
//						if (bFound) {
//							break;
//						}						
					}
					listCompare.add(iNumber);
					
				}
				
				System.out.println(String.format("Count:[%d]",iCount));
				
				outString = String.format("Case #%d: %d\n", iCaseNumber++, iCount); 
				System.out.print(outString);
				out.write(outString);
			}
			in.close();
			out.close();
			////////////////////////////////////////////////////////////////
		} catch (IOException e) {
			System.err.println("ERROR");
			System.err.println(e); // ¿¡·¯°¡ ÀÖ´Ù¸é ¸Þ½ÃÁö Ãâ·Â
			System.exit(1);
		}	     
	}

}
