The pronunciation of é, e and eu

There are seven vowels in Sundanese language: a, i, u, o, é, e and eu. The last three vowels (é, e and eu) are interesting. The vowel e should be pronounced as ə, just like the sound of a  as 

indefinite article in English, e.g. a book. The vowel é should be pronounced as e as in bed. The vowel eu should be pronounced as əu, something like eu in entrepreneur. Here are some words: begang  = thin, belegug = churlish, kénca = left, sépak = kick, beunghar = rich, seuri = to laugh.