<Tr> <Td> Open </Td> </Tr> <Tr> <Td> <Ul> <Li> help </Li> <Li> full chart </Li> <Li> template </Li> </Ul> <P> Paired vowels are: unrounded rounded </P> </Td> </Tr> <Ul> <Li> help </Li> <Li> full chart </Li> <Li> template </Li> </Ul> <P> Paired vowels are: unrounded rounded </P>

Which type of vowels appear to be the least marked