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

signed main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    int tc; cin >> tc;

    test:
    while (tc--) {
        string s; cin >> s;
        ll n = s.size();

        ll cnt[26] = {0};
        for (auto &u : s) cnt[u-'a']++;

        string ans;
        ll remaining = n;
        while (remaining > 0) {
            ll curr = -1;
            for (ll i = 0; i < 26; i++) {
                if (ans.size() and ans.back()-'a' == i) continue;
                if (curr == -1 and cnt[i]) curr = i;
                if (remaining-cnt[i] < cnt[i]) {
                    curr = i;
                    break;
                }
            }
            
            ll j = -1;
            for (ll i = 0; i < 26; i++) {
                if (i == curr) continue;
                if (cnt[i]) {
                    j = i;
                    break;
                }
            }
            
            if (j == -1) {
                ans += char('a'+curr);
                cnt[curr]--;
                remaining--;
                break;
            }
            else {
                ans += char('a'+curr);
                ans += char('a'+j);
                cnt[curr]--;
                cnt[j]--;
                remaining -= 2;
            }
            // cout << ans << endl;
        }

        if (remaining) {
            cout << "-1\n";
            goto test;
        }
        
        for (ll i = 1; i < n; i++) {
            if (ans[i] == ans[i-1]) {
                cout << "-1\n";
                goto test;
            }
        }
        
        cout << ans << "\n";
    }
}