Out of the 27 cubes that compose the big cube, have only one face exposed (center of each face), have two faces exposed (edges), and have three faces exposed (vertices).
Out ng 27 cubes na gumawa ng sulat ang malaking kubo, may isa lamang mukha nakalantad (sentro ng bawat mukha), may dalawang mukha nakalantad (gilid), at may tatlong mukha nakalantad (vertices).