Nkọwa nkenke:

Mpụga nke isi nke nkedo nke oghere hexagon isi bolt dị okirikiri, na etiti ya bụ hexagonal, ebe hexagonal bolt bụ nke nwere isi ịghasa isi nwere akụkụ hexagonal. Mgbe a na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ, a na-enweta mmetụta mgbochi corrosion.