Macron and grave accent?

Can someone make the letters a, i, and u have macrons and grave accents?

I can get ḕ and ṑ because they are in Unicode. But a, i, and u aren't...help PLEASE! :[ My computer has trouble using combining characters.
Update: Thanks "That guy", I think I didn't give a correct explanation. I just meant that my computer can't make them, however, it has no problem reading them, so that's why I was asking for someone else to make them :p Sorry about that. Oh, and thanks for making them for me Zlevad! I really... show more Thanks "That guy", I think I didn't give a correct explanation. I just meant that my computer can't make them, however, it has no problem reading them, so that's why I was asking for someone else to make them :p Sorry about that.

Oh, and thanks for making them for me Zlevad! I really appreciate it.
2 answers 2