#include <iostream>
#include <vector>

using namespace std;

size_t get_num() {
    size_t rows;
    cin >> rows;

    string str;
    size_t index = -1;
    size_t number = 1;
    for (size_t i = 0; i < rows; i++) {
        cin >> str;
        size_t current = 0;
        for (; current < str.size(); current++) {
            if (str[current] == '#') {
                break;
            }
        }

        if (index == (size_t)-1) {
            index = current;
            continue;
        }

        if (current < index)
            number = 2 * number + 1;
        else
            number *= 2;

        index = current;
    }

    return number;
}

void print_num(size_t num) {
    vector<int> pos = vector<int>();

    int minp = 0;
    int maxp = 0;
    int index = 0;

    pos.push_back(index);
    for(;num != 1; num /= 2) {
        if (num % 2 == 0) {
            index--;
        } else {
            index++;
        }

        pos.push_back(index);
        minp = min(minp, index);
        maxp = max(maxp, index);
    }

    int size = maxp - minp + 1;
    // cout << "width: " << size << endl;

    cout << pos.size() << endl;

    for (size_t i = 0; i < pos.size(); i++) {
        size_t posi = pos.size() - i - 1;

        int index = -minp + pos[posi];
        for (int w = 0; w < size; w++) {
            if (w == index)
                cout << '#';
            else
                cout << '.';
        }
        cout << endl;
    }


}

int main() {
    size_t n1 = get_num();
    size_t n2 = get_num();

    size_t res = n1 + n2;
    print_num(res);

    return 0;
}