The associative property of multiplication of parallelograms divided into congruent parallelograms of order (a, b), (c, d) and (e, f) is given by (a, b) x [(c, d) x (e, f)] = [(a, b) x (c, d)] x (e, f)
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list
