#include <bits/stdc++.h>

using namespace std;
#define ll long long
#define pii pair<int, int>
#define ld long double
#define all(a) (a).begin(), (a).end()

void print(int k) {
    cout << 3 * k + 2 << " " << 3 * k + 2 << "\n";
    vector<string> ans(3 * k + 2, string(3 * k + 2, '#'));
    for (int i = 0; i < k; ++i) {
        int x = -500 + i, y = 0;
        for (int a = 0; a < 1000; ++a) {
            for (int b = 0; b < 1000; ++b) {
                int x1 = x + a * (k + 1) + b * k;
                int y1 = y + a - 2 * b;
                if (x1 >= 0 && x1 < 3 * k + 2 && y1 >= 0 && y1 < 3 * k + 2) {
                    ans[x1][y1] = '.';
                }
            }
        }
    }
    for (auto s : ans) {
        cout << s << "\n";
    }
}

void col(int x, int y, vector<string>& ans) {
    for (int a = 0; a < 1000; ++a) {
        for (int b = 0; b < 1000; ++b) {
            int x1 = x + a * 6 + b * 5;
            int y1 = y + b * 3;
            if (x1 >= 0 && x1 < (int)ans.size() && y1 >= 0 && y1 < (int)ans[0].size()) {
                ans[x1][y1] = '.';
            }
        }
    }
}

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    /**for (int p1 = 1; p1 <= 10; ++p1) {
    for (int q1 = 1; q1 <= 10; ++q1) {*/


    int p, q;
    /// p = p1;
    /// q = q1;
    cin >> p >> q;
    int d = __gcd(p, q);
    p /= d;
    q /= d;

    /// if (d != 1) continue;

    /// cout << p << ' ' << q << ":\n";

    if (p * 3 <= q * 2) {
        cout << 1 << " " << 2 * q << "\n";
        string s(2 * q, '.');
        for (int i = 0; i < p; ++i) {
            s[3 * i] = s[3 * i + 1] = '#';
        }
        cout << s << "\n";
        return 0;
        /// continue;
    }
    if (p * 5 > q * 4) {
        cout << "-1 -1\n";
        return 0;
        /// continue;
    }

    if (p == 3 && q == 4) {
        print(2);
    } else if (p == 4 && q == 5) {
        print(1);
    } else if (p == 5 && q == 7) {
        print(4);
    } else if (p == 7 && q == 10) {
        print(6);
    } else if (p == 7 && q == 9){
        cout << "6 18\n";
        vector<string> ans(6, string(18, '#'));
        col(-500, 0, ans);
        col(-499, 0, ans);
        col(-497, -1, ans);
        col(-495, -2, ans);
        for (auto s : ans) {
            cout << s << "\n";
        } 
    } else {
        cout << "-1 -1\n";
    }

    /// }}

    return 0;
}