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 NumberRecycling {
	public static void main( String args[] ) {
		new NumberRecycling();
	}
	
	public NumberRecycling() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		
		for( int j=1; j<=T; j++ ) {
			System.out.println( "Case #"+ j + ": " + doCase(sc) );
		}
	}
	
	public int doCase( Scanner sc ) {
		int A = sc.nextInt();
		int B = sc.nextInt();
		
		int pairs = 0;
		for( int i=A+1; i<=B; i++ )
			pairs += numberOfLowerPairNumbers(A,i);
		
		return pairs;
	}
	
	public int numberOfLowerPairNumbers( int lowerBound, int num ) {
		String number = Integer.toString(num);
		String tmp    = new String(number);
		
		int result = 0;
		
		for( int i=0; i<number.length()-1; i++ ) {
			tmp = tmp.substring(1) + tmp.charAt(0);
			
			if( tmp.charAt(0) == '0' )
				continue;
			
			int shiftedNum = Integer.parseInt(tmp);
			
			if( shiftedNum == num )
				break;
			
			if( shiftedNum < num && shiftedNum >= lowerBound )
				result++;
		}
		
		return result;
	}
}