aaaaaaaaaaA heH heH nuN

#include "bits/stdc++.h"

/*
 * Author: Matheus Monteiro
 */

int getP(int x) {
    int p = 1;
    int ans = 0;
    while(2 * p - 1 <= x) {
        p *= 2;
        ++ans;
    }
    return ans;
}

void solve() {
    long long n;
    std::cin >> n;

    std::string ans;

    while(n > 0) {
        int p = getP(n);
        n -= ((1 << p) - 1);
        if(ans.empty()) {
            ans = std::string(p, 'a');
        } else {
            int l = ans.size() - 1;
            while(p > 0 and l > 0) {
                if(ans[l] == 'a') p--;
                if(p) l--;
            }
            ans.insert(ans.begin() + l, 'h');
        }
    }
    std::cout << "nunhehheh" << ans << '\n';
}

int32_t main() {

    int t = 1;
    std::cin >> t;
    for(int caso = 1; caso <= t; ++caso) {
        solve();
    }

    return 0;
}