In the game of contract bridge a three suiter (or three-suited hand) denotes a hand containing at least four cards in three of the four suits. As a bridge hand contains thirteen cards, only two hand patterns can be classified as three suiters: 4-4-4-1 and 5-4-4-0. The standard treatment to describe a three-suited hand after an opposing opening in a suit is the takeout double. Conventions like the and can be used to introduce a three-suited hand after an opposing 1NT opening.