> import java.util.*;
> 
> public class Main{
> 	public static void main(String args[]) throws Exception {
> 		new SetMe(new Scanner(System.in));
> 	}
> }
> 
> class SetMe{
> 	SetMe(Scanner cin){
> 		char Card[][] = new char[1024][8];
> 		int nCard;
> 		String Line;
> 		boolean Flag = true;
> 		while(true){
> 			if(Flag)	Flag = false;
> 			else	System.out.println();
> 			nCard = 0;
> 			while(true){
> 				Line = cin.nextLine();
> 				if(Line.length()==0) break;
> 				Card[nCard++] = Line.toCharArray();
> 			}
> 			if(nCard==0) break;
> 			System.out.print("CARDS: ");
> 			for(int i = 0; i < nCard; i++){
> 				System.out.print(" "+String.valueOf(Card[i]));
> 			}
> 			System.out.println();
> 			int nSet = 1;
> 			for(int i = 0; i < nCard; i++){
> 				for(int j = i+1; j < nCard; j++){
> 					for(int k = j+1; k < nCard; k++){
> 						boolean OK = true;
> 						for(int t = 0; t < 4; t++){
> 							OK &= Card[i][t]==Card[j][t]&&Card[i][t]==Card[k][t]&&Card[j][t]==Card[k][t] ||
> 								 Card[i][t]!=Card[j][t]&&
> 								 Card[i][t]!=Card[k][t]&&
> 								 Card[j][t]!=Card[k][t];
> 						}
> 						if(!OK)	continue;
> 						if(nSet==1){
> 							System.out.print("SETS:   ");
> 						}
> 						else{
> 							System.out.print("        ");
> 						}
> 						System.out.println((nSet++)+". "+String.valueOf(Card[i])+" "+
> 													 String.valueOf(Card[j])+" "+
> 													 String.valueOf(Card[k]));
> 					}
> 				}
> 			}
> 			if(nSet==1){
> 				System.out.println("SETS:   *** None Found ***");
> 			}
> 		}
> 	}
> }