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#include <bits/stdc++.h>
using namespace std;
const int MAXN=18;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int n,m;
int comb[MAXN+1];
void bkt(int k) {
if(k==m+1) {
for(int i=1; i<=m; i++){
fout<<comb[i]<<' ';
}
fout<<'\n';
} else {
for(int i=comb[k-1]+1; i<=n-m+k; i++) {
comb[k]=i;
bkt(k+1);
}
}
}
int main() {
fin>>n>>m;
bkt(1);
return 0;
}