"four" - key terms from Wikipedia

all four
bbc four
big four
fantastic four
figure four leglock
final four
four
four brothers
four children
four color
four corners
four cylinder
four deuces
four door
four elements
four episodes
four feathers
four freedoms
four friends
four gospels
four heavenly kings
four horsemen
four horsemen of the apocalypse
four members
four months
four noble truths
four of a kind
four quartets
four seasons
four stroke
four suits
four swords
four swords adventures
four symbols
four teams
four temperaments
four times
four tops
four weddings and a funeral
four wheel drive
four wheel drive system
four years
frightful four
gang of four
number four
round four
season four
series four
there are four
ultimate fantastic four