#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
#pragma warning (disable: 4996)

struct Node {
	int to, cap, rev;
};

class MaxFlow {
public:
	vector<Node> G[5009];
	bool used[5009];

	void add_edge(int u, int v, int c, int d) {
		G[u].push_back(Node{ v, c - d, (int)G[v].size() });
		G[v].push_back(Node{ u, d, (int)G[u].size() - 1 });
	}
	int dfs(int pos, int to, int f) {
		if (pos == to) return f;
		used[pos] = true;
		for (int i = 0; i < G[pos].size(); i++) {
			if (used[G[pos][i].to] == true || G[pos][i].cap == 0) continue;
			int F = dfs(G[pos][i].to, to, min(f, G[pos][i].cap));
			if (F == 0) continue;
			G[pos][i].cap -= F;
			G[G[pos][i].to][G[pos][i].rev].cap += F;
			return F;
		}
		return 0;
	}
	int max_flow(int u, int v) {
		int f = 0;
		while (true) {
			for (int i = 0; i < 5009; i++) used[i] = false;
			int g = dfs(u, v, 100000007); f += g;
			if (g == 0) break;
		}
		return f;
	}
};

// 入力
int H, A[2509];
int W, B[2509];
int K, X[19], Y[19];

// その他
int Answer[2509][2509];
bool used[2509][2509];
bool forced[2509][2509];
MaxFlow G;

int main() {
	// 入力
	cin >> H >> W;
	for (int i = 1; i <= H; i++) cin >> A[i];
	for (int i = 1; i <= W; i++) cin >> B[i];
	cin >> K;
	for (int i = 1; i <= K; i++) cin >> X[i] >> Y[i];

	// 貪欲法
	vector<pair<int, int>> CA, CB;
	for (int i = 1; i <= K; i++) forced[X[i]][Y[i]] = true;
	for (int i = 1; i <= H; i++) CA.push_back(make_pair(A[i], i));
	for (int i = 1; i <= W; i++) CB.push_back(make_pair(B[i], i));
	sort(CA.begin(), CA.end()); reverse(CA.begin(), CA.end());
	sort(CB.begin(), CB.end()); reverse(CB.begin(), CB.end());
	for (int i = 0; i < H; i++) {
		for (int j = 0; j < CA[i].first; j++) used[CA[i].second][CB[j].second] = true;
		for (int j = 0; j < CA[i].first; j++) CB[j].first -= 1;
		sort(CB.begin(), CB.end()); reverse(CB.begin(), CB.end());
	}
	if (CB[0].first >= 1) {
		printf(":(\n");
		return 0;
	}

	// 判定
	int SA = 0; for (int i = 1; i <= H; i++) SA += A[i];
	int SB = 0; for (int i = 1; i <= W; i++) SB += B[i];
	if (SA != SB) {
		printf(":(\n");
		return 0;
	}

	// 家の部分を消去
	int cnts = 0;
	for (int i = 1; i <= K; i++) {
		if (used[X[i]][Y[i]] == false) continue;
		used[X[i]][Y[i]] = false; cnts++;
	}

	// 辺を貼る
	for (int i = 1; i <= H; i++) {
		for (int j = 1; j <= W; j++) {
			if (forced[i][j] == true) continue;
			G.add_edge(i, H + j, 1, (int)used[i][j]);
		}
	}
	for (int i = 1; i <= H; i++) {
		int cnts = 0;
		for (int j = 1; j <= W; j++) cnts += (int)used[i][j];
		G.add_edge(H + W + 1, i, A[i], cnts);
	}
	for (int i = 1; i <= W; i++) {
		int cnts = 0;
		for (int j = 1; j <= H; j++) cnts += used[j][i];
		G.add_edge(H + i, H + W + 2, B[i], cnts);
	}

	// フローを流す
	int Ret = G.max_flow(H + W + 1, H + W + 2);
	if (Ret != cnts) {
		printf(":(\n");
		return 0;
	}

	// 復元する
	for (int i = 1; i <= H; i++) {
		for (int j = 0; j < G.G[i].size(); j++) {
			int pos = G.G[i][j].to; if (pos <= H || pos >= H + W + 1) continue;
			if (G.G[i][j].cap == 0) Answer[i][pos - H] = 1;
		}
	}
	for (int i = 1; i <= K; i++) Answer[X[i]][Y[i]] = 2;

	// 出力
	printf("Yay!\n");
	for (int i = 1; i <= H; i++) {
		for (int j = 1; j <= W; j++) {
			if (Answer[i][j] == 0) printf(".");
			if (Answer[i][j] == 1) printf("o");
			if (Answer[i][j] == 2) printf("x");
		}
		printf("\n");
	}
	return 0;
}