[supermod]

Try this 



Capital Vowels
Ā
ALT+0256 Cap long A
Ē
ALT+0274 Cap long E
Ī
ALT+0298 Cap long I
Ō
ALT+0332 Cap long O
Ū
ALT+0362 Cap long U
Ȳ
ALT+0562 Cap long Y
Æ
ALT+0198 Cap short ash
Ǣ
ALT+0482 Cap long ash
 
Lower Vowels
ā
ALT+0257 Lower long A
ē
ALT+0275 Lower long E
ī
ALT+0299 Lower long I
ō
ALT+0333 Lower long O
ū
ALT+0363 Lower long U
ȳ
ALT+0563 Lower long Y
æ
ALT+0230 Lower short ash
ǣ
ALT+0483 Lower long ash