#include <stdio.h>

int main() {
	int n, i;
	while (scanf("%d", &n), n) {
		if (n%2==0) {
			printf("%d ", n-1);
			for (i=n-3; i>=2; i-=2) printf("%d %d ", i, i+1);
			printf("1 %d 2 ", n);
			printf("\n");
		} else {
			printf("%d ", n);
			for (i=n-2; i>=0; i-=2) printf("%d %d ", i, i+1);
			printf("\n");
		}
	}
	return 0;
}