Straight staircase.
Straight staircase with a lower floor.
Straight staircase with a platform at the center.
Straight staircase with a 90º bend at the beginning.
Curved staircase with a lower 90º bend on the left or right.
Curved Staircase with a 90º bend in the center, left or right.
Curved Staircase with a 90º curve in the center, left or right.
Staircase with two 90º bends, left or right.
Staircase with 180º bend mid staircase.
Staircase with two 90º bends on different levels.
