Phonotactics
The syllable structure of Dutch is (C)(C)(C)V(C)(C)(C)(C). Many words, like in English, begin with three consonants - e.g. straat (street). There are words that end in four consonants - e.g. herfst (autumn), ergst (worst), interessantst (most interesting), sterkst (strongest) - most of them being adjectives in the superlative form.
Read more about this topic: Dutch Phonology