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 JuanjeProblemaC 
{
	public static void main(String[] args){
		Scanner entrada = new Scanner(System.in);
		int tam = entrada.nextInt();
		for(int problema = 1; problema <= tam;problema++)
		{
			int A = entrada.nextInt();
			int B = entrada.nextInt();
			int resultado = 0;
			for(int indice=A;indice<=B;indice++) 
			{
			
				ArrayList<Integer> pares = new ArrayList<Integer>();
				String ns = indice+"";
				for (int j=ns.length()-1;j>0;j--) {
					String k = ns.substring(j);
					String nuevoVal = k + ns.substring(0,j);
					int m = Integer.parseInt(nuevoVal);
					if (m>indice && A<m && B>=m) 
					{ 
						if (pares.indexOf(m)==-1)
							pares.add(m);
					}
				}
				int tamPares = pares.size();
				resultado += tamPares;
			}
			
			System.out.format("Case #%d: %d\n", problema, resultado);
		}
	}
	
}