I never looked at the floor plans. There's 14 units per floor!
https://www.condowong.ca/masseytower.htm
I'd say 12 and 13 were cobbled from the left over space from designing the other units. Too big to be one unit so it become two awkwardly small units. The biggest, 9, is really, really awful too.
*edit 5 and 2 aren't much better either.