Consider a system consisting of a cylinder with a movable piston containing 10^6 gas molecules at 298 rm K at a volume of 1 rm L. Consider the following descriptions of this system:

1. Initial system
2. Starting from the initial system, the volume of the container is changed to 2 rm L and the temperature to 395 rm K.
3. Starting from the initial system, a combination reaction occurs at constant volume and temperature.
4. Starting from the initial system, the gas reacts completely to produce 10^7 gas molecules at 395 rm K in a volume of 2 rm L.
5. Starting from the initial system, the temperature is changed to 395 rm K at constant volume.

Arrange the descriptions in order of increasing number of microstates in the resulting system.