blue

a color.

blue

a color.

stack

a pile of things, one on top of another.

meet

to come face-to-face with another person

wheel

a disk that turns around a fixed, central point.

push

to move something away from you by pressing hard against it.

underneath

below something, or in a lower place.

above

over, or higher than something.

alone

by yourself, without anyone else.