TRY THIS! [Brain teaser] test your IQ

A lift is on the ground floor. There are 4
people in the lift including me. When the lift reaches 1st floor, 1 person
gets out 3 people get in. The lift goes up to the second floor, 2 people get out 6 people get in. It then goes up to the next floor up, no- one gets out but 12 people get in. Halfway up to the next floor up the lift cable snaps, it crashes to the floor. Everyone dies in the lift. How did I survive?

Drop your answer in the comment box        {°¿~}