h,w,*a=open(0).read().split();b=a.index("snuke");print(([chr(i)for i in range(65,91)][b%int(w)]+str(b//int(w)+1)))
h,w,*a=open(0).read().split();b=a.index("snuke");print((chr(b%int(w)+65)+str(b//int(w)+1)))
h, w, *a = open(0).read().split()
b = a.index("snuke")
print(([chr(i) for i in range(65, 91)][b % int(w)] + str(b // int(w) + 1)))

h, w, *a = open(0).read().split()
b = a.index("snuke")
print((chr(b % int(w) + 65) + str(b // int(w) + 1)))

-print(([chr(i) for i in range(65, 91)][b % int(w)] + str(b // int(w) + 1))) +print((chr(b % int(w) + 65) + str(b // int(w) + 1)))