This printable bingo card set on the topic of Vocabulary & Spelling has 21 unique items on a 4x4 grid. Each card draws from a pool of 21 items, so every player gets a different card.
CONQUER
OUTLET
OUTPUT
OVERBOARD
OVERCAST
OVERLOOK
PERSISTENCE
PREDICAMENT
SUBDIVISION
SUBHEADS
SUBSET
SUBWAY
SUPERMARKET
SUPERNATURAL
SUPERSONIC
SUPERSTAR
TRIUMPHANT
UNDERCOVER
UNDERCURRENT
UNDERGROUND
UNDERLINE