O1V4E1R1B3O1O1K5E1D2
20 points
OVERBOOKED is validvalid
OVERBOOK, to issue reservations in excess of the space available [v]
OVERBOOK, to book in excess of space available [v]
OVERBOOK, to issue reservations in excess of the space available [v]
OVERBOOK, to book in excess of space available [v]