Case 'scription

Song jam of the moment

The Instrumental case describes the instrument with which the action was carried out. It's used for the concepts of "With" or "By means of"

Singular Masculine Nouns:

If ends in consonant, add "ом" If ends in unstressed "ж ц ч ш щ" add "ем" Replace "й" with "ем", or if stressed, "ём"

Singular Feminine Nouns:

If ends in "a" replace with "ой" If, after taking off the "a" there is a "ж ц ч ш or "щ", replace with "ей" If ends in "я" replace with "ей", unless stressed, then "ёй" If ends in "ь" replace with "ью"

Singular Neuter Nouns:

add "м"

Plural:

Look at the last letter of the word in its original (Nominative) form and:

All consonants: add "ами"

Replace "a" and "o" with "ами"