#include<bits/stdc++.h>
using namespace std;

void tongpai(int arr[],int len,int mx)//桶排去重
{
	int i;
	int *buckes;
	buckes = (int *)malloc(sizeof(int)*(mx+1));
	memset(buckes,0,sizeof(int)*(mx+1));//使桶里面值全部为零
	for(i=0;i<len;i++)
	{
		buckes[arr[i]]++;
	}
	for(i=0;i<=mx;i++)
	{
		if(i==mx)
		{
			cout<<mx;
			break;
		}
		if(buckes[i])
		{
			cout<<i<<" ";
		}
	}
	cout<<endl;
}
int main()
{
	int t,n,i,jishu;
	cin>>t;
	while(t--)
	{
		jishu = 0;
		cin>>n;
		int arr[n];
		int arr2[101];
		for(i=0;i<n;i++)
		{
			cin>>arr[i];
			arr2[i] = arr[i];
			if(arr[i]%2!=0)
			{
				jishu++;//奇数的个数
			}
		}
		if(jishu>0)//用于排除奇数个数为零的情况
		{
			arr2[n] = jishu;
			n++;
		}
		sort(arr2,arr2+n);//排序
		tongpai(arr2,n,arr2[n-1]);
	}
}