1. Rumba Box
The basic repeatable pattern of the Rumba is the Box, a sequence of 6 steps which form the shape of a box on the floor.
The Rumba Box can be thought of in two halves, each half consisting of a walk, followed by a chasse. The first half of the Box begins with a forward walk on the man's left foot, counted "slow", followed by a chasse to the side (RF, LF), counted "quick, quick". The second half of the Box begins with a back walk on the man's right foot, counted "slow", follwed by a chasse to the side (LF, RF), counted "quick, quick". The pattern can be repeated as desired.
The lady's part is nearly identical to the man's, except that her part begins with the second half of the Box. So when he steps forward with his left foot to begin the first half of the box, she steps back with her right foot to begin the second half, and vice-versa.
The Rumba Box can be taken without turn, or it can be turned up to 1/4 to left for each half-Box. If taken with the maximum amount of turn, one full turn would be completed after two Boxes.
The Box is usually danced in closed position, but it can also be taken in open facing position with a one- or two-hand hold.