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ARRANGE.cpp
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ARRANGE.cpp
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/*My First Template :D*/
#include <bits/stdc++.h>
#include <limits.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<int> vi;
#define MOD (ll)1000000007
#define pb push_back
#define EPS 1e-9
#define FOR(i,n) for(int i = 0;i < n; i++)
#define FORE(i,a,b) for(int i = a;i <= b; i++)
#define pi(a) printf("%d\n", a)
#define all(c) c.begin(), c.end()
#define tr(container, it) for(typeof(container.begin()) it = container.begin(); it != container.end(); it++)
#define gc getchar_unlocked
#define sdi(a, b) si(a);si(b)
#define io ios_base::sync_with_stdio(false);cin.tie(NULL);
#define endl '\n'
#define F first
#define S second
#define FILL(arr, val) memset(arr, val, sizeof(arr))
#define read(arr, n) for(int i = 0;i < n; i++)cin>>arr[i];
#define sp ' '
template <typename T> T gcd(T a, T b){return (b==0)?a:gcd(b,a%b);}
template <typename T> T lcm(T a, T b){return a*(b/gcd(a,b));}
template <typename T> T mod_exp(T b, T p, T m){T x = 1;while(p){if(p&1)x=(x*b)%m;b=(b*b)%m;p=p>>1;}return x;}
template <typename T> T invFermat(T a, T p){return mod_exp(a, p-2, p);}
template <typename T> T exp(T b, T p){T x = 1;while(p){if(p&1)x=(x*b);b=(b*b);p=p>>1;}return x;}
void si(int &x){
register int c = gc();
x = 0;
int neg = 0;
for(;((c<48 || c>57) && c != '-');c = gc());
if(c=='-') {neg=1;c=gc();}
for(;c>47 && c<58;c = gc()) {x = (x<<1) + (x<<3) + c - 48;}
if(neg) x=-x;
}
int main(){
io;
int t;
cin >> t;
while(t--){
int n;
cin >> n;
int countOne = 0;
vector<int> V;
for(int i = 0;i < n; i++){
int num;
cin >> num;
if(num == 1){
countOne++;
}else{
V.pb(num);
}
}
for(int i = 0;i < countOne; i++){
cout << 1 << sp;
}
sort(V.rbegin(), V.rend());
if(V.size() == 2 && V[0] == 3 && V[1] == 2){
cout << 2 << sp << 3 << endl;
}else{
for(int i = 0;i < V.size(); i++)
cout << V[i] << sp;
cout << endl;
}
}
return 0;
}