#include <stdio.h>

int n;



int main() {
  for(;;) {
    scanf("%d",&n);
    if (!n) break;
    printf("Printing order for %d pages:\n",n);
    int sheets = (n+3) / 4;
    int fr1 = sheets*4, fr2 = 1;
    for(int i=1; i<=sheets; i++) {
      if (fr1 <= n || fr2 <= n) {
        printf("Sheet %d, front: ",i);
        if (fr1 > n) printf("Blank, ");
        else printf("%d, ",fr1);
        if (fr2 > n) printf("Blank");
        else printf("%d\n",fr2);
      }
      fr2++; fr1--;
      if (fr2 <= n || fr1 <=n) {
        printf("Sheet %d, back: ",i);
	if (fr2 > n) printf("Blank, ");
	else printf("%d, ",fr2);
        if (fr1 > n) printf("Blank\n");
        else printf("%d\n",fr1);
      }
      fr2++; fr1--;
    }
    printf("\n");
  }
  return 0;
}