Here are the ``entity codes'' for entering those pesky macrons into your computerized Latin study aids!

Unicode Entity Codes for long vowels
  Upper Case Vowels
Ā Ā Capital Long A
Ē Ē Capital Long E
Ī Ī Capital Long I
Ō Ō Capital Long O
Ū Ū Capital Long U
  Lower Case Vowels
ā āLower long A
ē ēLower long E
ī ī Lower long I
ō ō Lower long O
ū ū Lower long U

The Conjugations for the verb "to be"

sum, esse, fuī, futūrus - to be

Present

Imperfect

Future
singular plural singular plural singular plural
sum sumus eram erāmus erō erimus
es estis erās erātis eris eritis
est sunt erat erant erit erunt