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#include <cstdio>
using namespace std;
#define NMAX 100005
int n, m, v[23];
void Back(int k){
int i;
if(k == m){
for(i=1; i<=m; i++){
printf("%d ", v[i]);
}
printf("\n");
}
else{
for(i=v[k] + 1; i <= n; i++){
v[k + 1] = i;
Back(k + 1);
}
}
}
int main(){
freopen("combinari.in", "r", stdin);
freopen("combinari.out", "w", stdout);
scanf("%d%d", &n, &m);
for(int i=1; i<=n; i++){
v[1] = i;
Back(1);
}
return 0;
}