#include <bits/stdc++.h>

using namespace std;

const int oo = 0x3f3f3f3f;
const double eps = 1e-9;
const double PI = 2.0 * acos(0.0);


typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<string> vs;

#define sz(c) int((c).size())
#define all(c) (c).begin(), (c).end()
#define FOR(i,a,b) for (int i = (a); i < (b); i++)
#define FORS(i,a,b,s) for (int i = (a); i < (b); i=i+(s))
#define FORD(i,a,b) for (int i = int(b)-1; i >= (a); i--)
#define FORIT(i,c) for (__typeof__((c).begin()) i = (c).begin(); i != (c).end(); i++)


bool piece[1000][1000];


void done(int n, int m, int d){
	cout << "A " << d << endl;
	cout << n << " " << m << " " << endl;
	FOR(i,0,n){
		FOR(j,0,m){
			//cout << i*d - (d-1)/2*n << " " << j*d - (d-1)/2*m << endl;
			if (piece[i*d - (d-1)/2*(n-1)][j*d - (d-1)/2*(m-1)]) cout << '.';
			else cout << '#';
		}
		cout << endl;
	}

	exit(0);
}

void done2(int n, int m, int d){
	cout << m << " " << n << " " << endl;
	FOR(j,0,m){
		FOR(i,0,n){
			//cout << i*d - (d-1)/2*n << " " << j*d - (d-1)/2*m << endl;
			if (piece[i*d - (d-1)/2*(n-1)][j*d - (d-1)/2*(m-1)]) cout << '.';
			else cout << '#';
		}
		cout << endl;
	}

	exit(0);
}


int main(){
	int n,m; cin >> n >> m;

	FOR(i,0,n)
		FOR(j,0,m){
			char x; cin >> x;
			piece[i][j] = x == '#';
		}

	// 1. option vertical
	bool bad = false;
	FOR(i,0,n){
		int t = 0;
		FOR(j,1,m)
			if (piece[i][j-1] != piece[i][j]) t++;

		if (t > 1) bad = true;
	}

	if (!bad){
		bool bad1 = false;
		bool bad2 = false;
		FOR(i,0,n){
			if (!piece[i][0]) bad1 = true;
			if (!piece[i][m-1]) bad2 = true;
		}

		if (!bad1) done(n,m,-1);
		if (!bad2) done(n,m,1);

	}

	// 2. option horizontal
	bad = false;
	FOR(j,0,m){
		int t = 0;
		FOR(i,1,n)
			if (piece[i-1][j] != piece[i][j]) t++;

		if (t > 1) bad = true;
	}

	if (!bad){
		bool bad1 = false;
		bool bad2 = false;
		FOR(j,0,m){
			if (!piece[0][j]) bad1 = true;
			if (!piece[n-1][j]) bad2 = true;
		}

		if (!bad1) done2(n,m,-1);
		if (!bad2) done2(n,m,1);
	}

	cout << "impossible" << endl;
	return 0;
}