Prepositional

Nouns

в / на +

singular

• for nouns that end in a consanant -е

• for nouns that end in a vowel, remove the last vowel and add -е

  • e.g. стол - столе

• for nouns that end in -и_, it becomes -ии

  • e.g. планетарий - планетарии

plural

• hard stem nouns and nouns that end in a husher -ах

  • e.g. стол - столах

• soft stem nouns -ях

  • e.g. трамвай - трамваях

Possessives

• masculine and neuter possessives end in -ём/-ем

• feminine possessives end in -ей

• plural end in -их

Adjectives

• end in -ых / -их (subjet to spelling rule)

в = a closed space, a space limited by defined borders even if not physical

на = an open space, a space without defined borders, an event