#include <iostream>
#include <vector>
#include <string>
#include <sstream>

int retID() {
    std::string line;
    std::getline(std::cin, line);

    for (int i = 0; i < (int)line.size(); ++i) {
        if (line[i] == '#') return i;
    }

    return -1;
}

int load(int &N) {
    std::cin >> N; std::cin.ignore();

    int id = retID();
    int number = 1;

    for (int i = 0;i < N-1; ++i) {
        int d = retID();
        if (d > id) {
            number *= 2;
        }
        else {
            number = (number * 2) + 1;
        }
        id = d;
    }

    return number;
}

int main() {
    std::ios::sync_with_stdio(false);

    int x, y, h_1, h_2;
    x = load(h_1);
    y = load(h_2);

    int res = x+y;
    std::vector<int> side;

    int minD = 0, maxD = 0;
    int delta = 0;
    int height = 1;

    while (res != 1) {
        int tmp = res / 2;

        if (tmp * 2 == res) {
            side.push_back(1);
            delta++;
        }
        else {
            side.push_back(-1);
            delta--;
        }

        minD = std::min(delta, minD);
        maxD = std::max(delta, maxD);
        res = tmp;

        ++height;
    }

    int width = maxD - minD + 1;
    std::vector<std::vector<char>> matrix(height, std::vector<char>(width, '.'));

//    std::cout << x << ", " << y <<", res : " << x+y << "\n\n\n";
//
    delta = 0;
    for (int i = 0; i < height; ++i) {
        matrix[i][delta - minD] = '#';
        delta += side[i];
    }

    std::cout << height << "\n";
    for (const auto &i : matrix) {
        for (auto j : i) {
            std::cout << j;
        }
        std::cout << '\n';
    }

    return 0;
}