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#include <iostream>
#include<fstream>
using namespace std;
int i,v[25],n,k;
bool valid[25];
ifstream f("combinari.in");
ofstream g("combinari.out");
void bk(int x)
{
if(x>k)
{
for(int i=1;i<=k;i++) g<<v[i]<<' ';
g<<'\n';
}
else
{
for(int i=v[x-1]+1;i<=n;i++)
{
if(!valid[i])
{
valid[i]=1;
v[x]=i;
bk(x+1);
valid[i]=0;
}
}
}
}
int main()
{
f>>n>>k;
bk(1);
return 0;
}