#include <bits/stdc++.h>

int32_t main() {
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(nullptr);

    int n;
    std::cin >> n;
    std::vector<std::string> input(n);
    for (auto& s : input) {
        std::cin >> s;
        // assert(s.size() == 3 * n);
    }

    std::vector<int> nxt(n, -1);
    for (int i = 0; i < n; i++) {
        if (input[i] == "?") {
            nxt[i] = -2;
        }
    }
    while (true) {
        int i = -1;
        for (int j = 0; j < n; j++) {
            if (input[j] != "?" && nxt[j] <= -1) {
                i = j;
                break;
            }
        }
        if (i == -1) {
            break;
        }
        for (int j = 0; j < n; j++) {
            if (input[j] == "?") {
                continue;
            }
            int sz = std::min<int>(input[i].size() - 1, input[j].size() - 1);
            if (input[i].substr(1, sz) == input[j].substr(0, sz)) {
                nxt[i] = j;
                break;
            }
        }
        if (nxt[i] <= -1) {
            for (int j = 0; j < n; j++) {
                if (input[j] == "?") {
                    input[j] = input[i].substr(1);
                    nxt[i] = j;
                    break;
                }
            }
            if (nxt[i] <= -1) {
                break;
            }
        }
    }

    if (std::none_of(nxt.begin(), nxt.end(), [&](int a) { return a == -1; })) {
        for (int i = 0; i < n; i++) {
            if (input[i] == "?") {
                std::cout << "a";
            } else {
                std::cout << input[i].front();
            }
        }
        std::cout << "\n";
        for (int i = 0; i < n; i++) {
            if (input[i] == "?") {
                std::cout << i + 1 << " \n"[i == n - 1];
            } else {
                std::cout << nxt[i] + 1 << " \n"[i == n - 1];
            }
        }
        return 0;
    } else {
        assert(false && "FUCK");
    }

    return 0;
}