This is the 5988th most frequent Russian word.
скамейку
Bench.
Here, 'скамейку' is used as a noun in the accusative case, indicating the object of the preposition 'на' in its spatial sense.
Я сел на скамейку в парке, чтобы наслаждаться свежим воздухом.
I sat on the bench in the park to enjoy the fresh air.
In this sentence, 'скамейку' is also in the accusative case as the direct object of the verb 'нарисовали', showing that the bench is the entity being depicted.
Дети нарисовали скамейку во дворе.
Children painted the bench in the yard.
Here, 'скамейку' is used in the accusative case because it is the direct object of the verb 'поставим', indicating the entity to be placed.