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
r,c=[int(i) for i in raw_input().split()]
grid=[]
blaceraw=[]
for i in range(r):
    tmp=raw_input()
    tmp=list(tmp)
    tmp1=[0 if s=='W' else 1 for s in tmp]
    grid.append(tmp1)
    if sum(tmp1)!=0:
        blaceraw.append(i)
    
res_r=blaceraw[len(blaceraw)/2]
black_col=[]
for i in range(c):
    if grid[res_r][i]==1:black_col.append(i)
res_c=black_col[len(black_col)/2]
print('{0} {1}'.format(res_r+1,res_c+1))
	      	 	 							    		   			