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#include <iostream>
#include <cstdio>
#include <algorithm>
using namespace std;
int n, k, sol[20], viz[20];
void afisare()
{
for(int i=0; i<k; i++)
printf("%d ", sol[i]);
printf("\n");
}
void bt(int poz)
{
if(poz==k){
afisare();
return;
}
for(int i=sol[max(poz-1, 0)]+1; i<=n; i++){
if(viz[i]==0){
sol[poz] = i;
viz[i] = 1;
bt(poz+1);
viz[i] = 0;
}
}
}
int main()
{
freopen("combinari.in", "r", stdin);
freopen("combinari.out", "w", stdout);
scanf("%d %d", &n, &k);
bt(0);
return 0;
}