I had to disambiguate these forms of the figures as much as possible in Bell Centennial by sort of opening the shapes up, as you can see in the bottom part of that slide.
여러분이 슬라이드 아래를 보시면, 제가 벨 센테니어에 가능한 모양들을 조금씩 오픈한  형태로 만들어야 했습니다.