s = input()
loss = s.count('x')
print("YES" if loss < 8 else "NO") s = input() s input() input loss = s.count('x') loss s.count('x') s.count s count 'x' print("YES" if loss < 8 else "NO") print "YES" if loss < 8 else "NO" loss < 8 loss 8 "YES" "NO" loss = s.count('x') s.count('x') loss s = input() input() s
s = input()
loss = s.count('x')
print("YES" if loss < 8 else "NO")