#include<bits/stdc++.h>
using namespace std;
#define FOR(i,s,t) for(int i=(s),_t=(t); i<=_t; ++i)
typedef long long ll;
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int p,q;
    cin >> p >> q;
    if(p*3<=q*2) {
        cout << 1 << ' ' << 2*q << '\n';
        FOR(i,1,p) {
            cout << "##.";
        }
        FOR(i,1,2*q-p*3) {
            cout << '.';
        }
        cout << '\n';
    } else if(p==3 && q==4) {
        cout << "4 4\n";
        cout << "####\n";
        cout << "##..\n";
        cout << "####\n";
        cout << "..##\n";
    } else if(p==7 && q==10) {
        cout << "4 5\n";
        cout << "####.\n";
        cout << "####.\n";
        cout << "#..##\n";
        cout << "#..##\n";
    } else if(p==4 && q==5) {
        cout << "5 5\n";
        cout << "####.\n";
        cout << "##.##\n";
        cout << ".####\n";
        cout << "###.#\n";
        cout << "#.###\n";
    } else if(p==5 && q==7) {
        cout << "6 7\n";
        cout << "######.\n";
        cout << "##..##.\n";
        cout << "##..##.\n";
        cout << "######.\n";
        cout << "#.##.##\n";
        cout << "#.##.##\n";
    } else {
        cout << "-1 -1\n";
    }
    return 0;
}