E.cpp

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

#define nl '\n'


//----------------------------------- DEBUG -----------------------------------
#define sim template < class c
#define ris return * this
#define dor > debug & operator <<
#define eni(x) sim > typename \
enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) {
sim > struct rge { c b, e; };
sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
sim > auto dud(c* x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifdef LOCAL
~debug() { cerr << endl; }
eni(!=) cerr << boolalpha << i; ris; }
eni(==) ris << range(begin(i), end(i)); }
sim, class b dor(pair < b, c > d) {
  ris << "(" << d.first << ", " << d.second << ")";
}
sim dor(rge<c> d) {
  *this << "[";
  for (auto it = d.b; it != d.e; ++it)
    *this << ", " + 2 * (it == d.b) << *it;
  ris << "]";
}
#else
sim dor(const c&) { ris; }
#endif
};
#define imie(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "
// debug & operator << (debug & dd, P p) { dd << "(" << p.x << ", " << p.y << ")"; return dd; }

//----------------------------------- END DEBUG --------------------------------

void run_cases() {
    string s;
    cin >> s;

    map<char,int> cnt;
    for(auto u: s) {
        cnt[u]++;
    }

    int rounds = set<char>(s.begin(), s.end()).size();

    string rev = s;
    reverse(rev.begin(), rev.end());

    string removal = "";
    for(auto u: rev) {
        if(!count(removal.begin(), removal.end(), u)) {
            removal = u + removal;
        }
    }

    int len = 0;

    for(int round = 1; round <= rounds; round++) {
        int count = cnt[removal[round - 1]];
        if(count % round != 0) {
            cout << -1 << '\n';
            return;
        }
        len += count / round;
    }

    string original = s.substr(0, len);

    bool ok = true;

    string t = original;

    string add = original;

    for(auto u: removal) {
        string tmp = "";
        for(auto v: add) {
            if(u != v) {
                tmp += v;
            }
        }
        add = tmp;
        t += add;
    }

    if(t == s) {
        cout << original << " " << removal << '\n';
    } else {
        cout << -1 << '\n';
    }
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(nullptr);

    int tests = 1;
    cin >> tests;

    for(int test = 1;test <= tests;test++) {
        run_cases();
    }
}