1interjection of surprise
2Ah!
3Oh!
4interjection expressing doubt or requiring answer
5Eh?
6what?
7interjection of surprise or doubt
8My!
9what's up?
10interjection or grunt of agreement
11uhm
12Ah, OK
13expression of recognition
14Oh, it's you!
15modal particle ending sentence, showing affirmation, approval, or consent