Russian Cases: Forming the Cases: Instrumental
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"
Otherwise replace with "ями"