Turn the red dots into blue dots.
Turn the red into blue and the empty spaces into green.
Bit is in the pipes, and the pipes have holes. Bit's job is to mark where the holes are so someone else can fix them.
Bit is out flying around.
When Bit finds a blue square, he turns left.
When Bit finds a green square, he turns right.
When Bit finds a red square, he stops.
Bit needs to climb to the top of the building, using the green elevators.
Now write a single function that can allow Bit to travel in either direction.