# a,*s=open(0);h,w=map(int,a.split())
# for k in range(h*w):
#  for _ in(s[i:=k//w][j:=k%w]>a)*s*w:s[i:=-~i%h][j:=-~j%w]<'.'!=exit(print(~-i%h+1,~-j%w+1))
# print('loop')


s=open(0).read()
s=s[s.find("\n")+1:]
# print(s)
h=s.count("\n")#h+1
l=len(s)
w=l//h
I=s.find('R')
# print(h,w)
# print(I)
for k in range(h*w):s[N:=(I+2+~-w*(I%w<w-2))%l]!='.'==exit(print("loop")if s[N]>'A'else print(I//w+1,I%w+1));I=N