Detailed Instructions: Given a list of steps and an additional step, determine where the step fits into the original list of steps. A correct answer, correctly places the given step into the set of steps so that it creates a new plausible set of steps. Output must be formatted as 'After step n', where n is the step number after which the given additional step is to be inserted.
Q: Steps: (1) The bird picks a tree (2) The bird collects twigs and other refuse (3) The bird makes sides with twigs and other things (4) The bird adds softer material to the inside (5) The nest is done.  
Where does the following step fit into the given list of steps: The bird makes a flat base with twigs 
A:
 After step 2. 