Consider a table of size n × m, initially fully white. Rows are numbered 1 through n from top to bottom, columns 1 through m from left to right. Some square inside the table with odd side length was painted black. Find the center of this square.

Input

The first line contains two integers n and m (1 ≤ n, m ≤ 115) — the number of rows and the number of columns in the table.

The i-th of the next n lines contains a string of m characters s_{i1} s_{i2} … s_{im} (s_{ij} is 'W' for white cells and 'B' for black cells), describing the i-th row of the table.

Output

Output two integers r and c (1 ≤ r ≤ n, 1 ≤ c ≤ m) separated by a space — the row and column numbers of the center of the black square.

Examples

Input

5 6
WWBBBW
WWBBBW
WWBBBW
WWWWWW
WWWWWW


Output

2 4


Input

3 3
WWW
BWW
WWW


Output

2 1
import java.io.*;
import java.util.*;

public class A {

	static StringBuilder st;

	static int dx[] = { 1, -1, 0, 0, -1, 1, 1, -1 };

	static int dy[] = { 0, 0, -1, 1, -1, 1, -1, 1 };

	static int n, m;
	static char[][] mat;

	static boolean isValid(int i, int j) {
		return i < n && j < m && i >= 0 && j >= 0 && mat[i][j] == 'B';

	}

	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner();
		PrintWriter out = new PrintWriter(System.out);

		n = sc.nextInt();
		m = sc.nextInt();

		mat = new char[n][m];

		for (int i = 0; i < n; i++)
			mat[i] = sc.nextCharArray();

		int r = 0;
		int c = 0;
		outer: for (int i = 0; i < n; i++)
			for (int j = 0; j < m; j++) {
				if (!isValid(i, j))
					continue;

				int f = 0;
				while (true) {
					int can = 0;

					for (int k = 0; k < 8; k++)
						can += isValid(i + dx[k]*f, j + dy[k]*f) ? 1 : 0;

					if (can == 0) {
						r = i + 1;
						c = j + 1;
						break outer;
					} else if (can != 8)
						break;
					f++;
				}

			}

		out.println(r +" "+c);
		out.flush();
		out.close();

	}

	static class Scanner {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st;

		String next() throws Exception {
			while (st == null || !st.hasMoreTokens())
				st = new StringTokenizer(br.readLine());

			return st.nextToken();
		}

		int nextInt() throws Exception {
			return Integer.parseInt(next());
		}

		long nextLong() throws Exception {
			return Long.parseLong(next());
		}

		double nextDouble() throws Exception {
			return Double.parseDouble(next());
		}

		char nextChar() throws Exception {
			return next().charAt(0);
		}

		char[] nextCharArray() throws Exception {
			return next().toCharArray();
		}
	}

}
