Vowels and diphtongs   The list of fourteen simple vowels and four diphthongs listed in this article seems to fall short in that it merely distinguishes between  and and omits the intermediate   as in deur geur and zeur There is a marked distinction between the pronunciation of the diphtong in these words and the pronunciation of both the diphtong in neus leut and deuk and the vowel  in hut dus and bul One also notices the absence of  as in huid uit and fuik which is markedly different from the open y in ui lui and bui I am hesitant to edit correspondingly since references do not generally appear to support this but I do wonder what the general feeling about this is