Second declension of nouns.

Падеж Case Вопрос Question Единственное число Singular
И.п. / / N.c. Кто? / Что? Who? / What? (name of the essence, object, condition) кот   (cat)   конь   (horse) окно   (window)   копьё   (spear)   море   (sea)  
Р.п. / / G.c. Кого?/ Чего?   of who? / / of what? кота   (Cuddle cat)   коня   (Food for the horse) окна   (Do not stand by the window!) копья   (He does not have spear) моря   (On the shore of the sea)
Д.п. / / D.c. Кому?/ Чему?   for whom? / / for what? коту   (Give the cat meat) коню   (Give the name for the horse) окну   (Go to the window!) копью   (Attached to the spear) морю   (Tell to sea "Goodbye!")
В.п. / / A.c. Кого?/ Что?   (find) whom? (find) what? кота   (Find the cat under the sofa) коня   (Wash the horse) окно   (Open the window!) копьё   (Bring me a spear!) море   (I want to see the sea)
Т.п. / / Ab.c. Кем? / Чем?   by whom? by what? котом   (Play with the cat) конём   (Walking on the field with a horse) окном   (Fall outside the window) копьём   (Hit a spear) морем   (Beyond the sea - a foreign country)
П.п. / / P.c. (о) ком? / / (о) чём? (about) whom? (about) what? (о) коте   (Talking about the only good cat) (о) коне   (Sitting astride a horse) (об) окне   (Cat stuck in a window ajar) (о) копье   (At the spear – someone else's blood) (о) море   (Tell me about the sea)

 

Падеж Case Вопрос Question Множественное число Plural
И.п. / / N.c. Кто? / Что? Who? / What? (name of the essence, object, condition) коты   (cats) кони   (horses) окна   (windows) копья   (spears) моря (Seas of the Eastern Hemisphere)
Р.п. / / G.c. Кого?/ Чего?   of who? / / of what? котов   (Run away from cats) коней   (In a pack, a lot of horses) окон   (some light windows) копьев   (Many sharp spears) морей   (In Asia, many of the seas)
Д.п. / / D.c. Кому?/ Чему?   for whom? / / for what? котам   (Give names to all the cats) коням   (Horses shod hooves) окнам   (By the windows need curtains) копьям   (For our spears need resurfacing) морям   (We'll go over seas to the North Pole)
В.п. / / A.c. Кого?/ Что?   (find) whom? (find) what? котов   (Feed the cats) коней   (Buy horses) окна   (Close the windows!) копья   (Sharpen my spears!) моря   (Find on the map deep sea!)
Т.п. / / Ab.c. Кем? / Чем?   by whom? by what? котами   (Live with cats) конями   (Paddock with horses) окнами   (Behind the windows - the darkness) копьями   (We fought with spears in their hands.) морями   (We sailed the seas and oceans)
П.п. / / P.c. (о) ком? / / (о) чём? (about) whom? (about) what? (о) котах   (Dreaming about cats) (о) конях   (Harness on horses) (об) окнах   (On the windows - blinds) (о) копьях   (In spears - force) (о) морях   (Poems about the conquered seas)