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