Vowels: Standard - 'e' as in ‘pet’, (1st 'e'), 'o' as in ‘on’. Variation - 'e' followed by ‘m’, ‘n’, ‘ng’, ‘ny’ in the same syllable, is long and slightly nasalised.
Consonant combination - 'ny' (palato-nasal) combine 'n' and 'y' while top of tongue touches hard palate plus nasal vibration.
(Avoid the English 'ny' as in 'many' ).