b367

T = int(input())

while T:
    T -= 1

    n, m = map(int, input().split())
    arr = [list(map(int, input().split())) for i in range(n)]

    isDiff = False

    for i in range(n):
        for j in range(m):
            if arr[i][j] != arr[-i-1][-j-1]:
                isDiff = True

    if isDiff:
        print("keep defending")
    else:
        print("go forward")