1. Animate nouns: detone people or animals (not plants)
2. Femenine animate nouns behave just as inanimate
3. Prepositional Case
   1. -й, -а, -о, -я or -е
      1. change vowel to -e
   2. -consonant or -ь (masc)
      1. -е
   3. -ь (fem)
      1. -и
   4. -я or -е (if letter before is -и)
      1. second -и
4. Accusative Case
   1. -а (masc or fem)
      1. -у
   2. -я (masc or fem)
      1. -ю
   3. -consonant, -ь or -й
      1. if animate
         1. - consonant + а
         2. -ь or -й replace by я
      2. if not animate
         1. do not change
   4. -ь (fem)
      1. not change
   5. Neuter nouns
      1. not change