<Tr> <Td> <Ul> <Li> Shape of the universe </Li> <Li> Reionization Structure formation </Li> <Li> Galaxy formation </Li> <Li> Large - scale structure </Li> <Li> Large quasar group </Li> <Li> Galaxy filament </Li> <Li> Supercluster </Li> <Li> Galaxy cluster </Li> <Li> Galaxy group </Li> <Li> Local Group </Li> <Li> Void </Li> </Ul> </Td> </Tr> <Ul> <Li> Shape of the universe </Li> <Li> Reionization Structure formation </Li> <Li> Galaxy formation </Li> <Li> Large - scale structure </Li> <Li> Large quasar group </Li> <Li> Galaxy filament </Li> <Li> Supercluster </Li> <Li> Galaxy cluster </Li> <Li> Galaxy group </Li> <Li> Local Group </Li> <Li> Void </Li> </Ul> <Li> Shape of the universe </Li> <Li> Reionization Structure formation </Li>

Which of the following refers to the bbn formation during the big bang