#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 1000000000000000001

int main(){
	
	int _t;
	cin>>_t;
	rep(_,_t){
		int n;
		cin>>n;
		if(n%4==1||n%4==2){
			cout<<-1<<endl;
			continue;
		}
		string ans = "";
		while(n!=0){
			if(n%4==0){
				ans += "1001";
				n -= 4;
			}
			else{
				ans += "110";
				n -= 3;
			}
		}
		cout<<ans<<endl;
	}
		
	return 0;
}