Strange mini-figure pull from Ica Maxi Boras

In yesterday, I was and bought some food with my mum and decided to buy for mini-figures. I went to the toys and took four mini-figures bags that was under each other. I thought it was four random mini-figures because it always used to be so. But four mini-figures bags with the same mini-figures inside on some way accidentally ended under each other when they took up them from the cardboard and hanged the bags. I got those four mini-figures bags.