Will the eight-box mixed installation of lightning special police Gao Mei building block dolls be repeated?

There may be some duplication in the eight boxes of the hybrid lightning police Gomez building block. If the building blocks in each box are fixed and the number is the same, then buying eight boxes will get eight identical combinations. However, if the building blocks in each box are different and are randomly selected from a limited number of building blocks, there is the possibility of duplication, that is, some boxes may contain the same building blocks.