#include<stdio.h>
int v[30],viz[30],i,j,k,l,n;
FILE *g=fopen("combinari.out","w");
FILE *f=fopen("combinari.in","r");

void bac(int m)
{if(m==k)
        {for(i=1;i<=k;i++)
                fprintf(g,"%d ",v[i]);
        fprintf(g,"%c",'\n');
        return ;
        }
int j;
for(j=v[m]+1;j<=n;j++)
        if(!viz[j])
                {viz[j]=1;
                v[m+1]=j;
                bac(m+1);
                viz[j]=0;
                }
}
        
int main(){
fscanf(f,"%d%d",&n,&k);
bac(0);
fclose(g);
fclose(f);
return 0;}