#include <iostream>

int getHashIndex(std::string line) {
    int n = 0;
    while(true) {
        if(line[n] == '#') {
            return n;
        }
        n++;
    }
    return -1;
}

int decodeNumber(std::string line[], int ln) {
    int prev_index = getHashIndex(line[0]);
    int n = 1;
    for(int i = 1; i < ln; i++) {
        int index = getHashIndex(line[i]);
        if(index > prev_index) {
            n *= 2;
        } else {
            n = n * 2 + 1;
        }
        prev_index = index;
    }
    return n;
}

struct node {
    node *l;
    node *r;
};

std::string encodeNumber(int n) {
    node root{};

    node* cur = &root;

    int ll = 0,rl = 0;
    int cl = 0;
    int d = 1;
    while(n > 1) {
        node* nn = static_cast<node *>(malloc(sizeof(node)));
        if(n & 0x1) {
            cur->r = nn;
            cur = nn;
            cl++;
            if(cl > rl) {
                rl = cl;
            }
        } else {
            cur->l = nn;
            cur = nn;
            cl--;
            if(cl < ll) {
                ll = cl;
            }
        }
        n/=2;
        d++;
    }
    ll = abs(ll);

    std::cout<<d << "\n";

    std::string s[d];
    cur = &root;
    for(int j = 0; j < d; j++) {
        int i = 0;
        for (; i < ll; i++) {
            s[j].append(".");
        }
        s[j].append("#");
        for (; i < ll + rl; i++) {
            s[j].append(".");
        }
        if(cur->l != nullptr) {
            cur = cur->l;
            ll -= 1;
            rl += 1;
        } else if(cur->r != nullptr) {
            cur = cur->r;
            ll += 1;
            rl -= 1;
        }
    }


    for(int i = d-1; i >= 0; i--) {
        std::cout << s[i] << "\n";
    }
    return "";
}

int main() {
    int ln1,ln2;
    // read first number
    std::cin >> ln1;
    std::string s1[ln1];
    for(int i = 0; i < ln1; i++) {
        std::cin >> s1[i];
    }
    // read second number
    std::cin >> ln2;
    std::string s2[ln2];
    for(int i = 0; i < ln2; i++) {
        std::cin >> s2[i];
    }

    int n1 = decodeNumber(s1, ln1);
    int n2 = decodeNumber(s2, ln2);

    int n3 = n1 + n2;
//    ln3 = ln1;
//    s3 = s1;

//    std::cout << n3 << "\n";
    encodeNumber(n3);
//    std::cout << s3;

    return 0;
}