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.Scanner;


public class RN {
	
	static int A,B;
	static int[] chuso = new int[11];
	static int result = 0;
	public static void RN(int n, int B)
	{
		String ns = Integer.toString(n);
		int nl = ns.length();
		for (int i = 1; i < nl; i++)
		{
			String tmp = ns.substring(i);
			String tmp1 = ns.substring(0, i);
			String new_num = tmp + tmp1;
			int m = Integer.parseInt(new_num);
			if (m > n && m <= B)
				{
					//System.out.println(m + " " + n);
					result ++;
				}
		}
	}
	
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int k = 0; k<T; k++)
		{
		A = sc.nextInt();
		B = sc.nextInt();
		result = 0;
		for (int i = A; i<=B; i++)
			RN(i,B);
		//RN(12);
		System.out.println("Case #" + (k+1) + ": " + result);
	
		}
	}

}
