s=input()
if s.count("x")<=7:
    print("YES")
else:
    print("NO") s=input() s input() input if s.count("x")<=7:
    print("YES")
else:
    print("NO") s.count("x")<=7 s.count("x") s.count s count "x" 7 print("YES") print "YES" print("NO") print "NO" s=input() input() s
s=input()
if s.count("x")<=7:
    print("YES")
else:
    print("NO")