Postpositions of place

Where something sits in relation to something else — in, on, under, in front of, behind, between — said after the noun, not before it.

In and out

On top

Underneath

Front and back

Between and among

Beside and near

Facing, across, toward

Most of these are really nouns for a part of something — al front, art back, tüb bottom, üs top, inside, ara the space between — carrying an owner ending, so allında is literally "at its front". That is why they come in threes: içinde where something is, içine where it is going, içinden where it is coming from. üsünde and üsüne take the noun in its plain form, while ızından and ortasında take it in the genitive.