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;
	}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;


public class ProbC {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException 
	{
		// TODO Auto-generated method stub
		BufferedReader br = new BufferedReader(new FileReader("C-small-attempt0.in"));
		BufferedWriter bw = new BufferedWriter(new FileWriter("C-small-attempt0.out"));
		String line = br.readLine();
		int T = Integer.parseInt(line);
		for(int i = 0; i < T; i++)
		{
			line = br.readLine();
			String[] tokens = line.split(" ");
			int A = Integer.parseInt(tokens[0]);
			int B = Integer.parseInt(tokens[1]);
			int cnt = 0;
			for(int j = A; j < B; j++)
			{
				for(int k = j + 1; k <= B; k++)
				{
					String nstr = "" + j;
					String mstr = "" + k;
					if(nstr.length() != mstr.length())
					{
						if(mstr.length() > nstr.length())
							break;
						else
							continue;
					}
					
					String tstr = nstr + nstr;
					if(tstr.contains(mstr))
						cnt++;
				}
			}
			String outputline = "Case #" + (i + 1) + ": " + cnt;
			System.out.println(outputline);
			bw.write(outputline + "\n");
		}
		br.close();
		bw.close();
	}

}
