Immediate infringement means that before the infringement activity begins, the right holder has evidence to prove that an action will soon constitute an infringement of his own intellectual property rights, or that the normal continuation of the action will necessarily constitute an infringement, and the right holder can sue according to law. According to the above definition, which of the following is cases that can be prosecuted for infringement? ['The well-known band Black Eyed Peas\' new album "Night Sky" is on sale. At the same time, another low-profile band named Black Rice Fruit is also making an album named "Starry Sky".', 'Ice cream in the shape of a little snowman is loved by children. Recently, a cottage-like snowman with a very similar shape has appeared on the market.', 'Xiao Zhang is the manager of the R & D department of a software development company. He masters the core technology of a patented product of the company. Later, Xiao Zhang was dug away by another company and was developing a similar product.', "Xiaoxiao Shulang's electronic products have been well received after the listing, and another company is also following the development of a small champion human-computer interactive learning machine."]