Four families were on a joint trip. In the first family, there were three siblings, namely Alica, Betka and Cyril. In the second family were four siblings, namely David, Erik, Filip and Gabika. In the third family, there were two siblings, namely Hugo and Iveta. In the fourth family were three siblings, namely Ján, Karol and Lukáš. On the way, children were divided into groups so that in each group there were all children with the same number of brothers and no one else. How could children be divided? Specify all options.
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