A six line covers two adjacent rows and pays 5 to 1. Bets that include the zero, such as a split between zero and one or the first four numbers together, work the same way and are placed where the zero meets the grid. The zero is neither red nor black, neither odd nor even, which is why every outside bet loses when the ball lands there, unless a table rule returns some of the stake.
A straight up bet on a single number pays 35 to 1, the largest payout on the table. A split covers two neighbouring numbers and pays 17 to 1, a street covers a row of three and pays 11 to 1, and a corner covers four numbers where they meet and pays 8 to 1. Chips placed on the lines between numbers make these bets, and the dealer or the screen confirms which numbers each chip covers.
Dozens and columns each cover twelve numbers and pay 2 to 1. The dozens split the numbers into first, second and third groups of twelve, while the columns run along the length of the layout. Covering two dozens or two columns at once wins about two thirds of the time at a small profit per win. Neither option changes the long run cost, which is the same for almost every bet on the layout.