There are a bunch of Bingo pattern combinations, of which the most basic are static, variable, corners, and coverall. A static pattern cannot rotate. Moreover, wins only occur on a predetermined cell pattern on a single card. Variable patterns rotate in 90-degree increments up to 270 to create a pattern win. The four corners pattern allows players to cover all corners of a card. A coverall or ‘blackout’ pattern requires a winning match on all numbers on the Bingo card.