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 A {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int T,no1,no2,k=0;
		A obj=new A();	
		T=sc.nextInt();
		int cnt=0;
		while(T>0)
		{	cnt++;
			no1=sc.nextInt();
			no2=sc.nextInt();
			k=0;
			for(int i=no1;i<=no2;i++)
			{
				for(int j=no1;j<=no2;j++)
				{
						if(i!=j)
						{
							k+=obj.chk(i,j);
							
							
						}
					
				}
				
			}
			System.out.println("Case #"+cnt+": "+k/2);
			T--;
		}
	}
	char ip1[]=new char[10];
	char ip2[]=new char[10];
	int length1(int n)
	{int i=0;
		while(n>0)
		{
			n=n/10;
			i++;
		}
		return i;
	}
	public int chk(int a,int b)
	{
		int l1,tn=1;
		l1=length1(a);
		
		
		//System.out.println("n1:"+a+" n2:"+b);

		for(int i=1;i<l1;i++)
		{int at=a,at2,at1;
		tn=1;
			for(int j=1;j<=i;j++)
			{
				tn*=10;
			}
				at1=at%tn;
				//System.out.println("at:"+at1);
				at2=at/tn;
				
				//System.out.println("at:"+at2);
				tn=1;
				for(int j=1;j<=length1(at2);j++)
				{
					tn*=10;
				}	
			int atmp=at1*tn+at2;
			//System.out.println("atmp:"+atmp);

			if(atmp==b)
				return 1;
			
		}
		return 0;
	}


}
