#include <stdio.h>
int n,m,x[20],uz[20];
FILE *f,*g;
void cit(){
	f=fopen("combinari.in","r");
	fscanf(f,"%d %d",&n,&m);
	fclose(f);
}

void afis(){
	int i;
	for (i=1;i<=m;i++)
		fprintf(g,"%d ",x[i]);
	fputc('\n',g);
}

void back(int k){
	int i;
	if (k>m) afis();
	else
		for (i=x[k-1]+1;i<=n;i++)
			if (!uz[i])
			{
				uz[i]=1;
				x[k]=i;
				back(k+1);
				uz[i]=0;
			}
}

int main(){
	cit();
	g=fopen("combinari.out","w");
	x[0]=0;
	back(1);
	fclose(g);
	return 0;
}