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.*;

public class C
{
	public static void main(String[] args) throws IOException
	{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int T = Integer.parseInt(br.readLine());	
		
		String[] line;
		for(int i=1;i<=T;i++)
		{
			line = br.readLine().split("\\W+");
			int a = Integer.parseInt(line[0]);
			int b = Integer.parseInt(line[1]);
			System.out.println("Case #"+i+": "+recycled(a,b));
		}
	}
	
	public static long recycled(int a,int b)
	{
		long ret = 0;
		for(int i=a;i<b;i++)
		{
			int temp = i;
			int len = 0;
			int p;
			for(p = 1;temp/p!=0;p*=10)len++;
			
			p = p/10;
			int in = 10;
//			System.out.println(i+" length "+len);
			for(int j=1;j<len;j++, in *= 10)
			{
				int r  = temp%in;
				int l  = temp/in;
				int n  = (r*10*p)/in;
				n  += l;
				if(n<=i || n<a || n > b) continue;
				//System.out.println(i+" "+n);
				ret++;
			}
		}
		return ret;
	}	
}
