import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}


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


public class gjam {
	
	public static void main(String[] args)
	{
	
		int TestCases = 0;
		int currentCase = 0;
		
		try
		{
			
		
			FileInputStream fstream = new FileInputStream("C-small-attempt0.in");
			DataInputStream dstream = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(dstream));
			
			String inputStr = br.readLine();
			
			TestCases = Integer.parseInt(inputStr);
			
			while(currentCase != TestCases)
			{
				ArrayList<Integer> results = new ArrayList<Integer>();
				inputStr = br.readLine();
				int result = 0;
				
				String[] inputs = inputStr.split(" ");
				int size = inputs[0].length();
				int A = Integer.parseInt(inputs[0]);
				int B = Integer.parseInt(inputs[1]);
				if(A >= 10 && B > A)
				for(int i = A; i <= B; i++)
				{
					for(int j = 1; j <= size; j++)
					{
						int moved = moveDigits(j,i);
						
						if(A <= i && i < moved && moved <= B)
						{
							
							results.add(i);
							results.add(moved);
							result++;
						}
						
					}
					
					
				}
				
				System.out.println("Case #" + (currentCase +1) + ": " + result);
				currentCase++;
			}
			
			
		}
		catch(Exception e)
		{
			System.err.println("Err: " + e.getMessage());
		}
		
	}
	public static int moveDigits(int numTomove,int input)
	{
		String original = "" + input;
		int length = original.length();
		String sub1 = original.substring(length - numTomove);
		String sub2 = original.substring(0,length - numTomove);
		
		String output = sub1 + sub2;
		
		return Integer.parseInt(output);
	}
	
}
