#include<stdio.h>
int n,k,x[20],nr,j;
void pune(int i);
FILE *f=fopen("combinari.in","r"),
     *g=fopen("combinari.out","w");
int main()
{   fscanf(f,"%d%d",&n,&k);
    pune(1);
    fcloseall();
    return 0;
}
void pune(int i)
{    if(nr<k){ nr++; x[i]=1;
               if(i==n){ for(j=1;j<=n;j++)if(x[j]) fprintf(g,"%d ",j);
                         fprintf(g,"\n");
                         }
               else pune(i+1);
               nr--; x[i]=0;
               }
      if(i<=n-k+nr){ if(i==n){ for(j=1;j<=n;j++)if(x[j]) fprintf(g,"%d ",j);
                         fprintf(g,"\n");
                         }
                      else pune(i+1);
                    }
}