We often see triangles in the market. The most common mechanical method for labeling triangles is Andrew's pitchfork. If drawn correctly it identifies triangle ABC. The bisection of BC and the line from A through the bisection doesn't enhance my understanding of parallelepiped's so I'm focused just on triangle ABC.
Triangle ABC exists.
Triangle BCD is a sequential triangle that shares BC in common with triangle ABC.
Parallelogram ABCD exists.
Extending the sequential triangles ABC and BCD to yet another triangle CDE gives us another parallelogram BCDE that's sequential to parallelogram ABCD.
Parallelograms ABCD and BCDE form 2 sides of a parallelepiped. Continuing the process of labeling sequential parallelograms defines the parallelepiped ABCDEFGHI composed of:
Parallelepiped ABCDEFGHI expressed as an array might look like this:
ABCD BCDE CDEF DEFG EFGH FGHI
It depends on what type of data mining or higher math is used to analyse the array. It'll be amusing if the heavy side step function correlates with that type of array.