(interj.) oh, wow, huh... (to express agreement, admiration, etc. with a prolonged tone)
(par.) (used at the end of a sentence) expressing appreciation, agreement, urge, etc.; (used in the middle of a sentence) indicating a pause to draw attention; used when enumerating items
(interj.) (to press for answer) well; (asking for repetition) eh, what
(interj.) ah, aha, what (to express puzzled surprise)