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.util.*;
import java.io.*;

public class Recycled
{
	public static void main(String[] sArgs)throws IOException
	{
		Scanner oScan = new Scanner(new File("recycled.in"));
		PrintWriter out = new PrintWriter("recycled.out");

		int o_0 = oScan.nextInt();oScan.nextLine();
		for(int o_o=1;o_o<=o_0;o_o++)
		{
			int A = oScan.nextInt(),B=oScan.nextInt();
			int count=0,base=0;
			for(int i=1;i<=A;i*=10)base+=i;
			for(int i=A;i<B;i++)
			{
				String s = new String(i+"");
				ArrayList<Integer> nums = new ArrayList<Integer>();
				if(i%base==0)
				{
					//System.out.println("same "+i);
					continue;
				}
				for(int j=1;j<s.length();j++)
				{
					String newS = s.substring(j)+s.substring(0,j);
					if(newS.charAt(0)=='0')continue;
					int rec = new Integer(newS);
					if(rec>i&&rec<=B&&!nums.contains(rec)){count++;nums.add(rec);}
				}
			}
			out.println("Case #"+o_o+": "+count);
		}

		out.close();
	}
}