#include<stdio.h>
FILE *f=fopen("submultimi.in","r");
FILE *g=fopen("submultimi.out","w");
int n,x[15],viz[16];
void tipar(int k){
int i;
for (i=1;i<=k;i++)
	fprintf(g,"%d ",x[i]);
fprintf(g,"\n");

}
int cont(int k){
int i;
for (i=1;i<=k-1;i++)
	if (x[k]==x[i])
		return 0;
return 1;
}
void back(int k){
int i;
for (i=x[k-1]+1;i<=n;i++)
      {
	    x[k]=i;
		
			tipar(k);
	    if (k<n)
			back(k+1);
	
}

}
int main(){
	fscanf(f,"%d %d",&n);
	back(1);
	return 0;
}