U y

U yU yU yU y
U yU yU yU yU yU yU yU y
U yU yU yU yU yU yU yU yU yU yU yU y
U yU yU yU yU yU yU yU yU yU yU yU yU yU yU yU y
U yU yU yU yU yU yU yU y