/*  This Code is Submitted by wywcgs for Problem 1684 on 2005-03-21 at 20:07:20 */ 
#include <stdio.h>

int main()
{
    char name[16][26], *fname[16];
    int n, time = 0;
    int j;
    
    while(scanf("%d", &n) == 1){
        if(n == 0){
            return 0;
        }else{
            time++;
            for(j = 0; j < n; j++){
                scanf("%s", name[j]);
                if(j % 2 == 0){
                    fname[j/2] = name[j];
                }else{
                    fname[n-j/2-1] = name[j];
                }
            }
            printf("SET %d\n", time);
            for(j = 0; j < n; j++){
                printf("%s\n", fname[j]);
            }
        }
    }
    
    return 0;
}