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.io.File;
import java.io.FileNotFoundException;
import java.util.HashSet;
import java.util.Scanner;


public class RecycledNumbers 
{
	static HashSet<String> set;
	public static int solve(int A, int B)
	{
		int count = 0;
		for(int n = A; n < B;n++)
		{
			String temp = n+"";
			int len = temp.length();
			for(int j = 0;j < len-1;j++)
			{
				temp = temp.charAt(len-1)+temp.substring(0,len-1);
				
				int m = Integer.parseInt(temp);
				if(set.contains(""+m))
					continue;
				if(m > n && m <= B)
					count++;
					
				set.add(""+m);
			}
			set.clear();
			
		}
		return count;
	}
	public static void main(String[] args) 
	{
		set = new HashSet<String>();
		Scanner sc = null;
		try {
			sc = new Scanner(new File("C:\\Users\\oibe\\Desktop\\C-small-attempt1.in"));
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
		
		int numCases = Integer.parseInt(sc.nextLine());
		for(int i = 1; i <= numCases;i++)
		{
			String[] vals = sc.nextLine().split(" ");
			int A = Integer.parseInt(vals[0]);
			int B = Integer.parseInt(vals[1]);
			System.out.println("Case #"+i+": "+solve(A,B));
		}
	}

}
