Rules for General

Question 1

Masculine and Feminine i-Stems

Answer 1

nouns that have a nom. sg. in -is or -ēs, and the same number of syllables in both the nom. and gen. cases

Question 2

Masculine and (chiefly) Feminine i-Stems

Answer 2

nouns with a nom. sg. in -s or -x which have a base ending in two consonants

Question 3

Neurter i-Stems

Answer 3

nouns with a nom. sg. ending in -al, -ar, or -e