#include<stdio.h>
int n,p,k,s[50],i;
void A(int k) {
    if(k-1==p) {
        for(int i=1;i<=p;i++)
            printf("%d ",s[i]);
        printf("\n");
    }
    else
        for(int i=s[k-1]+1;i<=n-p+k;i++)
            s[k]=i,A(k+1);
}
int main() { freopen("combinari.in","r",stdin),freopen("combinari.out","w",stdout),scanf("%d%d",&n,&p),A(1); }