import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
import java.util.*;

public class C
{
	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);
		int test = 1, cases = sc.nextInt();
		int a, b, curr, count;
		String aStr, bStr, num, shift;

		while(test <= cases)
		{
			count = 0;

			a = sc.nextInt();
			b = sc.nextInt();
			aStr = Integer.toString(a);
			bStr = Integer.toString(b);

			for(curr = a; curr <= b; curr++)
			{
				num = Integer.toString(curr);
				shift = nextShift(num);

				while(!num.equals(shift))
				{
					if(shift.charAt(0) != '0' && aStr.compareTo(shift) <= 0 && bStr.compareTo(shift) >= 0 && num.compareTo(shift) < 0)
						count++;

					shift = nextShift(shift);
				}
			}

			System.out.println("Case #" + test + ": " + count);

			test++;
		}
	}

	public static String nextShift(String s)
	{
		if(s.length() <= 1)
			return s;
		else return s.substring(1, s.length()) + s.substring(0, 1);
	}
}