Comment 3 for bug 1025291

Here is the full list of simple single "tonos" combinations. Note that the key for 'upsilon' is in fact the 'y' key (not the 'u' key, which typically maps to theta), and the key for 'omega' is in fact the 'v' key (not the 'w' key, which typically maps to the terminal sigma).

Lowercase letters:

Compose + ' + a => U+03AC GREEK SMALL LETTER ALPHA WITH TONOS
Compose + ' + e => U+03AD GREEK SMALL LETTER EPSILON WITH TONOS
Compose + ' + h => U+03AE GREEK SMALL LETTER ETA WITH TONOS
Compose + ' + i => U+03AF GREEK SMALL LETTER IOTA WITH TONOS
Compose + ' + o => U+03CC GREEK SMALL LETTER OMICRON WITH TONOS
Compose + ' + y => U+03CD GREEK SMALL LETTER UPSILON WITH TONOS
Compose + ' + v => U+03CE GREEK SMALL LETTER OMEGA WITH TONOS

Uppercase letters:

Compose + ' + A => U+0386 GREEK CAPITAL LETTER ALPHA WITH TONOS
Compose + ' + E => U+0388 GREEK CAPITAL LETTER EPSILON WITH TONOS
Compose + ' + H => U+0389 GREEK CAPITAL LETTER ETA WITH TONOS
Compose + ' + I => U+038A GREEK CAPITAL LETTER IOTA WITH TONOS
Compose + ' + O => U+038C GREEK CAPITAL LETTER OMICRON WITH TONOS
Compose + ' + Y => U+038E GREEK CAPITAL LETTER UPSILON WITH TONOS
Compose + ' + V => U+038F GREEK CAPITAL LETTER OMEGA WITH TONOS