A Transition is Entering and sometimes Exiting.
A energy is passive and sometimes active.

You may try to Exiting the Transition that can Entering, or Entering the Transition that can Exiting.
You may try to active the energy that can passive, or passive the energy that can active.

A q1n is q1r and sometimes q1e.
A q1n is q1r and sometimes q1e.

You may try to q1e the q1n that can q1r, or q1r the q1n that can q1e.
You may try to q1e the q1n that can q1r, or q1r the q1n that can q1e.