#include <cstdio>
#include <iostream>

using namespace std;
using i64 = long long;

i64 load_number() {
    i64 num = 1;

    int ops;
    cin >> ops;

    int lastIndex = 0;

    string first;
    getline(cin, first);
    getline(cin, first);

    for (int j = 0; j < first.length(); j++) {
        if (first[j] == '.') {
            continue;
        }

        lastIndex = j;
        break;
    }

    for (int i = 1; i < ops; i++) {
        string line;
        getline(cin, line);

        if (lastIndex > 0 && line[lastIndex - 1] == '#') {
            num = num * 2 + 1;
            lastIndex = lastIndex - 1;
        } else {
            num = num * 2;
            lastIndex = lastIndex + 1;
        }
    }

    return num;
}

int main() {
    cin.tie(NULL);
    std::ios::sync_with_stdio(false);

    i64 first = load_number();
    i64 second = load_number();

    i64 result = first + second;

    i64 t = result;
    int rows = 1;
    int current = 0, left = 0, right = 0;

    while (t > 1) {
        if (t % 2 == 0) {
            current -= 1;
            left = min(left, current);
        } else {
            current += 1;
            right = max(right, current);
        }

        t /= 2;
        rows += 1;
    }

    int bitCount = right - left + 1;
    int position = abs(left);

    char* chars = (char*) calloc(rows, bitCount);

    chars[bitCount * (rows - 1) + position] = '#';

    for (int i = rows - 2; i >= 0; i--) {
        if (result % 2 == 0) {
            chars[i * bitCount + position - 1] = '#';
            position -= 1;
        } else {
            chars[i * bitCount + position + 1] = '#';
            position += 1;
        }
        result /= 2;
    }

    cout << rows << '\n';
    for (int i = 0; i < rows; i++) {
        char* string = new char[bitCount + 1];
        for (int j = 0; j < bitCount; j++) {
            string[j] = chars[i * bitCount + j] == '#' ? '#' : '.';
        }
        string[bitCount] = '\0';
        cout << string << '\n';
        delete[] string;
    }

    free(chars);

    return 0;
}