How + Adjective + determiner + uncountable noun or plural noun + subject + predicate How beautiful the flowers they are?

How + Adjective + determiner + uncountable noun or plural noun + subject + predicate How beautiful the flowers they are?

How + adj + A / an + countable noun + subject + predicate
How + adj / adv + subject + predicate
What + A / an + adj + subject + predicate
What + adj + countable plural + subject + predicate
What + adj + uncountable noun + subject + predicate