#54049: Python
310119@yphs.tw
(邱晨睿)
T = int(input())
for k in range(T):
M,N = map(int,input().split())
s = []
for i in range(M):
a = input().split()
for j in range(len(a)):
s.append(a[j])
c = s[::-1]
if c == s:
print("go forward")
else:
print("keep defending")