import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int t=sc.nextInt();
		int casos=1, a, b, n, m, cont;
		while(t!=0){
			a=sc.nextInt();
			b=sc.nextInt();
			if(a>b){
				int aux=a;
				a=b;
				b=aux;
			}
			System.out.printf("Case #%d: ",casos++);
			if(a==b){
				System.out.printf("%d\n",0);
			}else{
				cont=0;
				for(n=a;n<b;n++){					
					for(m=n+1;m<=b;m++){					
						if(isRecycled(n,m)) cont++;
					}
				}
				System.out.printf("%d\n",cont);
			}
			t--;
		}		
	}
	public static boolean isRecycled(int n1, int n2){
		String s1, s2, aux;
		s1 =  String.valueOf( n1 );
		s2 =  String.valueOf( n2 );		
		boolean r = false;		
		for(int i=0;i<s1.length();i++){
			aux="";
			aux=s1.substring(i,s1.length())+s1.substring(0,i);
//			System.out.println(aux);
			if(aux.equals(s2)){
				r=true;
				break;
			}
		}		
		return r;
	}
}

// usage: java c infile > outfile
import java.io.BufferedReader;
import java.io.FileReader;
import java.util.Set;
import java.util.HashSet;

public class c
{
	public static void main(String[] args) throws Exception
	{
		String infile = args[0];
		
		BufferedReader reader = new BufferedReader(new FileReader(infile));
		int T = Integer.parseInt(reader.readLine());
		for (int t = 1; t <= T; t++)
		{
			Set<String> pairs = new HashSet<String>();
			String[] inputs = reader.readLine().split(" ");
			int A = Integer.parseInt(inputs[0]);
			int B = Integer.parseInt(inputs[1]);
			int length = inputs[0].length();
			//System.out.println("test = " + A + ", " + B + ", " + length);
			
			int total = 0;
			for (int i = A; i <= B; i++)
			{
				String trial = "" + i;
				//System.out.println("i = " + i);
				for (int n = 1; n < length; n++)
				{
					int j = Integer.parseInt(trial.substring(n) + trial.substring(0, n));
					//System.out.println(trial.substring(n) + ":" + trial.substring(0, n));
					if (trial.charAt(n) == '0')
					{
						continue;
					}
					
					String pair = i + " " + j;
					if (i < j && j <= B && !pairs.contains(pair))
					{
						total++;
						pairs.add(pair);
					}
				}
			}
			
			System.out.println("Case #" + t + ": " + total);
		}
		reader.close();
	}
}
