Problem: As the boat drifts down the river, a wood full of blossoms shows up on the riverfront.

"I've been here once," Mino exclaims with delight, "it's breathtakingly amazing."

"What is it like?"

"Look, Kanno, you've got your paintbrush, and I've got my words. Have a try, shall we?" 

There are four kinds of flowers in the wood, Amaranths, Begonias, Centaureas and Dianthuses.

The wood can be represented by a rectangular grid of n rows and m columns. In each cell of the grid, there is exactly one type of flowers.

According to Mino, the numbers of connected components formed by each kind of flowers are a, b, c and d respectively. Two cells are considered in the same connected component if and only if a path exists between them that moves between cells sharing common edges and passes only through cells containing the same flowers.

You are to help Kanno depict such a grid of flowers, with n and m arbitrarily chosen under the constraints given below. It can be shown that at least one solution exists under the constraints of this problem.

Note that you can choose arbitrary n and m under the constraints below, they are not given in the input.

Input

The first and only line of input contains four space-separated integers a, b, c and d (1 ≤ a, b, c, d ≤ 100) — the required number of connected components of Amaranths, Begonias, Centaureas and Dianthuses, respectively.

Output

In the first line, output two space-separated integers n and m (1 ≤ n, m ≤ 50) — the number of rows and the number of columns in the grid respectively.

Then output n lines each consisting of m consecutive English letters, representing one row of the grid. Each letter should be among 'A', 'B', 'C' and 'D', representing Amaranths, Begonias, Centaureas and Dianthuses, respectively.

In case there are multiple solutions, print any. You can output each letter in either case (upper or lower).

Examples

Input

5 3 2 1


Output

4 7
DDDDDDD
DABACAD
DBABACD
DDDDDDD

Input

50 50 1 1


Output

4 50
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
ABABABABABABABABABABABABABABABABABABABABABABABABAB
BABABABABABABABABABABABABABABABABABABABABABABABABA
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

Input

1 6 4 5


Output

7 7
DDDDDDD
DDDBDBD
DDCDCDD
DBDADBD
DDCDCDD
DBDBDDD
DDDDDDD

Note

In the first example, each cell of Amaranths, Begonias and Centaureas forms a connected component, while all the Dianthuses form one.

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Solution (in JAVA):

Solution:
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.InputMismatchException;

public class Main {
	private static final int M = 50;
	private static final int[] DR = { -1, 0, 1, 0 };
	private static final int[] DC = { 0, 1, 0, -1 };

	public static void solve(FastIO io) {
		int A = io.nextInt();
		int B = io.nextInt();
		int C = io.nextInt();
		int D = io.nextInt();

		ArrayList<char[]> ans = new ArrayList<>();
		ans.addAll(makeFrame('A', 'B', B - 1));
		ans.addAll(makeFrame('B', 'C', C - 1));
		ans.addAll(makeFrame('C', 'D', D - 1));
		ans.addAll(makeFrame('D', 'A', A - 1));

		io.printf("%d %d\n", ans.size(), M);
		for (char[] ln : ans) {
			io.println(new String(ln));
		}
	}

	private static char[] blank(char c) {
		char[] ans = new char[M];
		Arrays.fill(ans, c);
		return ans;
	}

	private static ArrayList<char[]> makeFrame(char bg, char fg, int cnt) {
		ArrayList<char[]> lst = new ArrayList<char[]>();
		while (cnt > 0) {
			lst.add(blank(bg));
			char[] arr = blank(bg);
			for (int i = 0; i < M && cnt > 0; i += 2) {
				arr[i] = fg;
				--cnt;
			}
			lst.add(arr);
		}
		lst.add(blank(bg));
		return lst;
	}

	private static char[][] attempt(int A, int B, int C, int D, int M) {
		int total = A + B + C + D;
		ArrayList<Loc> evn = new ArrayList<>();
		ArrayList<Loc> odd = new ArrayList<>();
		int rows = 0;
		while (evn.size() + odd.size() < total) {
			for (int c = 0; c < M && evn.size() + odd.size() < total; ++c) {
				if (((rows + c) & 1) == 0) {
					evn.add(new Loc(rows, c));
				} else {
					odd.add(new Loc(rows, c));
				}
			}
			++rows;
		}

		ArrayList<Loc> all = new ArrayList<>(evn);
		all.addAll(odd);
	
		char[][] ans = new char[rows][M];
		int pos = 0;
		for (int i = 0; i < A; ++i) {
			Loc loc = all.get(pos++);
			ans[loc.R][loc.C] = 'A';
		}
		for (int i = 0; i < B; ++i) {
			Loc loc = all.get(pos++);
			ans[loc.R][loc.C] = 'B';
		}
		for (int i = 0; i < C; ++i) {
			Loc loc = all.get(pos++);
			ans[loc.R][loc.C] = 'C';
		}
		for (int i = 0; i < D; ++i) {
			Loc loc = all.get(pos++);
			ans[loc.R][loc.C] = 'D';
		}

		char[] freq = new char[256];
		for (int c = 0; c < M; ++c) {
			if (ans[rows - 1][c] == '\0') {
				if (c > 0) {
					++freq[ans[rows - 1][c - 1]];
				}
				if (rows >= 2) {
					++freq[ans[rows - 2][c]];
				}
			}
		}
		char what = '#';
		for (char c = 'A'; c <= 'D'; ++c) {
			if (freq[c] == 1) {
				what = c;
				break;
			}
		}
		what = '~';
		if (what == '#') {
			return null;
		}
		floodFill(ans, what, rows - 1, M - 1);
		return ans;
	}

	private static void floodFill(char[][] ans, char fill, int r, int c) {
		ans[r][c] = fill;
		for (int d = 0; d < DR.length; ++d) {
				int nr = r + DR[d];
				int nc = c + DC[d];
				if (nr >= 0 && nr < ans.length && nc >= 0 && nc < ans[nr].length && ans[nr][nc] == '\0') {
					floodFill(ans, fill, nr, nc);
				}
		}
	}

	public static class Loc {
		public int R, C;

		public Loc(int r, int c) {
			this.R = r;
			this.C = c;
		}
	}

	public static class FastIO {
		private InputStream reader;
		private PrintWriter writer;

		private byte[] buf = new byte[1024];
		private int curChar;
		private int numChars;

		public FastIO(InputStream r, OutputStream w) {
			reader = r;
			writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(w)));
		}

		public int read() {
			if (numChars == -1)
				throw new InputMismatchException();
			if (curChar >= numChars) {
				curChar = 0;
				try {
					numChars = reader.read(buf);
				} catch (IOException e) {
					throw new InputMismatchException();
				}
				if (numChars <= 0)
					return -1;
			}
			return buf[curChar++];
		}

		public String nextLine() {
			int c = read();
			while (isSpaceChar(c))
				c = read();
			StringBuilder res = new StringBuilder();
			do {
				res.appendCodePoint(c);
				c = read();
			} while (!isEndOfLine(c));
			return res.toString();
		}

		public String nextString() {
			int c = read();
			while (isSpaceChar(c))
				c = read();
			StringBuilder res = new StringBuilder();
			do {
				res.appendCodePoint(c);
				c = read();
			} while (!isSpaceChar(c));
			return res.toString();
		}

		public long nextLong() {
			int c = read();
			while (isSpaceChar(c))
				c = read();
			int sgn = 1;
			if (c == '-') {
				sgn = -1;
				c = read();
			}
			long res = 0;
			do {
				if (c < '0' || c > '9')
					throw new InputMismatchException();
				res *= 10;
				res += c - '0';
				c = read();
			} while (!isSpaceChar(c));
			return res * sgn;
		}

		public int nextInt() {
			int c = read();
			while (isSpaceChar(c))
				c = read();
			int sgn = 1;
			if (c == '-') {
				sgn = -1;
				c = read();
			}
			int res = 0;
			do {
				if (c < '0' || c > '9')
					throw new InputMismatchException();
				res *= 10;
				res += c - '0';
				c = read();
			} while (!isSpaceChar(c));
			return res * sgn;
		}

		public int[] nextIntArray(int n) {
			return nextIntArray(n, 0);
		}

		public int[] nextIntArray(int n, int off) {
			int[] arr = new int[n + off];
			for (int i = 0; i < n; i++) {
				arr[i + off] = nextInt();
			}
			return arr;
		}

		public long[] nextLongArray(int n) {
			return nextLongArray(n, 0);
		}

		public long[] nextLongArray(int n, int off) {
			long[] arr = new long[n + off];
			for (int i = 0; i < n; i++) {
				arr[i + off] = nextLong();
			}
			return arr;
		}

		private boolean isSpaceChar(int c) {
			return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
		}

		private boolean isEndOfLine(int c) {
			return c == '\n' || c == '\r' || c == -1;
		}

		public void print(Object... objects) {
			for (int i = 0; i < objects.length; i++) {
				if (i != 0) {
					writer.print(' ');
				}
				writer.print(objects[i]);
			}
		}

		public void println(Object... objects) {
			print(objects);
			writer.println();
		}

		public void printArray(int[] arr) {
			for (int i = 0; i < arr.length; i++) {
				if (i != 0) {
					writer.print(' ');
				}
				writer.print(arr[i]);
			}
		}

		public void printArray(long[] arr) {
			for (int i = 0; i < arr.length; i++) {
				if (i != 0) {
					writer.print(' ');
				}
				writer.print(arr[i]);
			}
		}

		public void printlnArray(int[] arr) {
			printArray(arr);
			writer.println();
		}

		public void printlnArray(long[] arr) {
			printArray(arr);
			writer.println();
		}

		public void printf(String format, Object... args) {
			print(String.format(format, args));
		}

		public void flush() {
			writer.flush();
		}
	}

	public static void main(String[] args) {
		FastIO io = new FastIO(System.in, System.out);
		solve(io);
		io.flush();
	}
}