Background-Info: In contrast to mandarin Chinese, which can only have a few consonants at the and of a syllable, e.g. man, mang, Cantonese syllables can contain p,t,k at their end.
Nevertheless, these consonants are so called unreleased stops. That is, the tongue gets into the right position, but, in opposition to usual stops, there is no pressure build up and released in a little oral explosion of air.
I am curious, if three syllables like ap, at, ak are discerned auditory, i repeated these syllables to myself and it is like being tricked, i can not tell, if i hear or do not hear a difference.
Question: What about Cantonese people, are they able to discern them just by listening the syllables without any further context that might help deduce which syllable is meant?