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*/

///YEAH IM THE BEST I'VE EVER WAS

///SO HAPPY

#include <bits/stdc++.h>

#define popcnt(x) __builtin_popcount(x)

#define fr first

#define sc second

#define m_p make_pair

#define low_bo(a, x) lower_bound(a.begin(), a.end(), x) - a.begin()

#define up_bo(a, x) upper_bound(a.begin(), a.end(), x) - a.begin()

#define unique(a) a.resize(unique(a.begin(), a.end()) - a.begin())

#define popcnt(x) __builtin_popcount(x)

//#include <ext/pb_ds/assoc_container.hpp>

//using namespace __gnu_pbds;

//gp_hash_table<int, int> table;

//#pragma GCC optimize("O3")
//#pragma GCC optimize("Ofast,no-stack-protector")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx")
//#pragma GCC target("avx,tune=native")
//float __attribute__((aligned(32)))

/*char memory[(int)1e8];

char memorypos;

inline void * operator new(size_t n){
    char * ret = memory + memorypos;
    memorypos += n;
    return (void *)ret;
}

inline void operator delete(void *){}
*/

using namespace std;

typedef long long ll;

typedef unsigned long long ull;

typedef long double ld;

typedef unsigned int uint;

ll sqr(ll x){
    return x * x;
}

int mysqrt(ll x){
    int l = 0, r = 1e9 + 1;
    while (r - l > 1){
        int m = (l + r) / 2;
        if (m * (ll)m <= x)
            l = m;
        else
            r = m;
    }
    return l;
}

#ifdef ONPC
    mt19937 rnd(231);
    mt19937_64 rndll(231);
#else
    mt19937 rnd(chrono::high_resolution_clock::now().time_since_epoch().count());
    mt19937_64 rndll(chrono::high_resolution_clock::now().time_since_epoch().count());
#endif
ll AR = 19, BR = 13, CR = 23, XR = 228, YR = 322, MODR = 1e9 + 993;

ll myrand(){
    ll ZR = (XR * AR + YR * BR + CR) % MODR;
    XR = YR;
    YR = ZR;
    return ZR;
}

int gcd(int a, int b){
    return a ? gcd(b % a, a) : b;
}

int gcdex(int a, int b, int &x, int &y){
    if (a == 0){
        x = 0;
        y = 1;
        return b;
    }
    int x1, y1;
    int ret = gcdex(b % a, a, x1, y1);
    x = y1 - (b / a) * x1;
    y = x1;
    return ret;
}

int Mod = 1e9 + 7;

int Bpow(int x, ll y){
    int ret = 1;
    int w = x;
    while (y){
        if (y & 1)
            ret = (ret * (ll)w) % Mod;
        w = (w * (ll)w) % Mod;
        y >>= 1;
    }
    return ret;
}

int Bdiv(int x){
    int a, b;
    gcdex(x, Mod, a, b);
    if (a < 0)
        a += Mod;
    return a;
}

int Bdiv(int x, int y){
    return (x * (ll)Bpow(y, Mod - 2)) % Mod;
}

inline int ad(int x, int y){
    return x + y >= Mod ? x + y - Mod : x + y;
}

inline int dif(int x, int y){
    return x - y < 0 ? x - y + Mod : x - y;
}

inline int mul(int x, int y){
    return (x * (ll)y) % Mod;
}

int inv(int a){
    int b = Mod, x = 0, y = 1;
    while (a){
        int t = b / a;
        b -= a * t;
        x -= t * y;
        swap(a, b);
        swap(x, y);
    }
    if (x < 0)
        x += Mod;
    return x;
}

void setmin(int &x, int y){
    x = min(x, y);
}

void setmax(int &x, int y){
    x = max(x, y);
}

void setmin(ll &x, ll y){
    x = min(x, y);
}

void setmax(ll &x, ll y){
    x = max(x, y);
}

const ll llinf = 1e18 + 100;

const ld eps = 1e-9;

const int maxn = 2e5 + 100, maxw = 1e6 + 100, inf = 2e9 + 100, sq = 100, X = 43, LG = 18, B = 3000;



int main() {
    #ifdef ONPC
    freopen("a.in", "r", stdin);
    freopen("a.out", "w", stdout);
    #else
    //freopen("a.in", "r", stdin);
    //freopen("a.out", "w", stdout);
    #endif // ONPC
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin >> n;
    vector<int> a(n), cs(n);
    set<int> g, gs;
    for (int i = 0; i < n; i++)
        cin >> a[i], a[i]--, g.insert(i);
    for (int i = 0; i < n; i++)
        cs[a[i]]++, gs.insert(a[i]);
    vector<int> q;
    for (int i = 0; i < n - 8; i++) {
        auto w = g.begin();
        while (w != g.end()) {
            if (!q.empty() && a[q.back()] == *w)
                w++;
            else {
                bool us = 0;
                if (gs.size() == 2) {
                    for (int i : gs)
                        if (cs[a[i]] == 1 && g.find(i) != g.end() && i != *w)
                            us = 1;
                }
                if (us)
                    w++;
                else
                    break;
            }
        }
        if (w == g.end()) {
            cout << -1;
            return 0;
        }
        q.push_back(*w);
        int t = a[*w];
        cs[t]--;
        if (cs[t] == 0)
            gs.erase(t);
        g.erase(w);
    }
    vector<int> e;
    for (auto i : g)
        e.push_back(i);
    do {
        bool is = 1;
        if (!q.empty() && a[q.back()] == e[0])
            continue;
        for (int i = 1; i < e.size(); i++)
        if (a[e[i - 1]] == e[i]) {
            is = 0;
            break;
        }
        if (is) {
            for (int i : e)
                q.push_back(i);
            break;
        }
    } while (next_permutation(e.begin(), e.end()));
    if (q.size() != n) {
        cout << -1 << '\n';
    } else {
        for (int i : q)
            cout << i + 1 << ' ';
        cout << '\n';
    }
}


Measured memory_bytes: 11008