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
n, m = map(int, input().split())

a = []


def is_center(a, y, x):
    count1 = count2 = count3 = count4 = 0
    # up
    y1 = y
    x1 = x
    while True:
        y2 = y1 - 1
        if y2 < 0:
            break
        c = a[y2][x]
        if c == "W":
            break
        count1 += 1
        y1 = y2

    # down
    y1 = y
    x1 = x
    while True:
        y2 = y1 + 1
        if y2 == n:
            break
        c = a[y2][x]
        if c == "W":
            break
        count2 += 1
        y1 = y2

    # left
    y1 = y
    x1 = x
    while True:
        x2 = x1 - 1
        if x2 < 0:
            break
        c = a[y1][x2]
        if c == "W":
            break
        count3 += 1
        x1 = x2

    # right
    y1 = y
    x1 = x
    while True:
        x2 = x1 + 1
        if x2 == m:
            break
        c = a[y1][x2]
        if c == "W":
            break
        count4 += 1
        x1 = x2

    return count1 == count2 == count3 == count4 and a[y][x] == "B"


for k in range(n):
    s = input()
    a.append(s)


for y in range(n):
    c = False
    for x in range(m):
        if is_center(a, y, x):
            print(y+1, x+1)
            c = True
            break
    if c:
        break


