79. Stems in -εο and -οο are contracted (29.a-c. But -εα becomes -ᾱ.)
81. a. Simple nouns take the circumflex on the ultima throughout.
b. Compounds keep the accent on the syllable that has it in the nominative singular.
ἔκπλους, ἔκπλου, ἔκπλων
So also adjectives (83).
89. a. Contractions are mostly as in nouns, but the final syllables characteristic of this declension are kept; hence in the singular -ρᾶ (not -ρη: 77.a) and ἁπλῆ, and in the neuter plural -ᾶ (not -η).
b. The long ultima does not exclude the acute accent from the antepenult—an exception to 12.
c. The accent of the nominative singular is retained throughout. (An accented ultima in the genitive and dative is circumflexed by some editors.)