#include<cstdio>
int a[20],b[20];
void back(int s,int n,int k)
{
    int i;
    if(s==k+1) {for(i=1;i<=k;i++) printf("%d ",a[i]); printf("\n");}
    else for(i=1;i<=n;i++)
        if(!b[i]&&i>a[s-1])
        {
            a[s]=i;
            b[i]=1;
            back(s+1,n,k);
            b[i]=0;
        }
}
int main()
{
    int n,k;
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d%d",&n,&k);
    back(1,n,k);
    return 0;
}